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Journal articles on the topic 'PH-meter'

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Published: 4 June 2021
Last updated: 4 February 2022

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1

McLean, Andrew J. "pH Meter." Academic Psychiatry 41, no. 6 (July 20, 2017): 769. http://dx.doi.org/10.1007/s40596-017-0761-x.

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2

Peng, Wayne. "Nature's pH meter." Nature Methods 6, no. 6 (June 2009): 404. http://dx.doi.org/10.1038/nmeth0609-404.

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3

KEMSLEY, JYLLIAN. "NANOWIRE POWERS pH METER." Chemical & Engineering News 85, no. 43 (October 22, 2007): 11. http://dx.doi.org/10.1021/cen-v085n043.p011.

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4

Paris, Michel R., and Daniel J. Aymes. "Experiments with "Calo-pH Meter"." Journal of Chemical Education 67, no. 6 (June 1990): 510. http://dx.doi.org/10.1021/ed067p510.

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5

Bishnoi, Sandra W., Christopher J. Rozell, Carly S. Levin, Muhammed K. Gheith, Bruce R. Johnson, Don H. Johnson, and Naomi J. Halas. "All-Optical Nanoscale pH Meter." Nano Letters 6, no. 8 (August 2006): 1687–92. http://dx.doi.org/10.1021/nl060865w.

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6

Groß, Michael. "Ein Fisch mit pH-Meter." Chemie in unserer Zeit 48, no. 4 (August 2014): 245. http://dx.doi.org/10.1002/ciuz.201490046.

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7

Altwicker, Elmar R., and Maureen Michael. "Precipitation pH Comparison of pH-Meter with Indicator Kits." Journal of the Air Pollution Control Association 35, no. 1 (January 1985): 44–45. http://dx.doi.org/10.1080/00022470.1985.10465885.

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8

Huang, Jian, and Zichen Bai. "Design of a New PH Meter." Journal of Physics: Conference Series 1649 (September 2020): 012027. http://dx.doi.org/10.1088/1742-6596/1649/1/012027.

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9

Paris, Michel R., Daniel J. Aymes, Rene Poupon, and Roland Gavasso. "Development of a new design for multipurpose meter: "Calo-pH Meter"." Journal of Chemical Education 67, no. 6 (June 1990): 507. http://dx.doi.org/10.1021/ed067p507.

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10

Ngafifuddin, Muchamad, Sunarno Sunarno, and Susilo Susilo. "PENERAPAN RANCANG BANGUN pH METER BERBASIS ARDUINO PADA MESIN PENCUCI FILM RADIOGRAFI SINAR-X." Jurnal Sains Dasar 6, no. 1 (May 22, 2017): 66. http://dx.doi.org/10.21831/jsd.v6i1.14081.

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Perancangan pH meter berbasis Arduino dilakukan untuk membuat alat ukur pH yang kompatibel dengan alat mesin pencuci film otomatis. Pengukuran pH pada larutan fixer sangat diperlukan karena tingkat pH sangat berpengaruh terhadap hasil citra radiografi. Pada penelitian ini telah dilakukan rancang bangun pH meter berbasis arduino uno. Rancang bangun alat ini menggunakan sensor E-201C, arduino uno, dan tampilan PC. Pengambilan data dilakukan menggunakan variasi larutan buffer. Hasil dari karakterisasi sensor menunjukkan sensor memiliki nilai sensitivitas 46,2mV/pH pada suhu 28oC. Pengukuran pada larutan asam menghasilkan tegangan sensor bernilai positif, larutan netral menghasilkan tegangan sensor mendekati nol, dan larutan basa menghasilkan tegangan sensor bernilai negatif. Berdasarkan hasil pengujian, pH meter yang dibuat mampu mengukur rentang nilai pH 1,6 sampai dengan 11 dengan ketelitian 99% dan layak digunakan sebagai alat ukur pH pada mesin pencuci film radiografi.Kata Kunci : Larutan fixer, sensor E-201C, arduino uno, pH meter Abstract Design of pH meter based on Arduino had done to create pH measurement instrument that compatible with automatic washing machine of x-ray radiograph film. The pH Measurement on buffer solution is important because acidic level extremely effect to result of radiograph image. In this research, the design of pH meter based on arduino uno has been performed. Sensor of E-201C, arduino uno an display PC used to designed of pH meter. Buffer solution has variated to get a data result. The result of sensor characterization shows that the sensitivity of the sensor is about 46.2mV/pH in the temperature of 28C. Measurement of acidic solution give result of positive voltage, netral solution voltage of limit to zero, and basic solution of negative voltage. According to the examination result, pH meter has made as can measure pH with ranges of 1,6 to 11 with 99% accuracy and proper to use as a pH measuring instrument to wash film radiography equipment.Keywords : Buffer Solution, Sensor of E-201C, Arduino uno, pH meter
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11

Ding, Jian Jun, Jun Wang, Chao Sun, Yan Qun Liu, Jia Yan Shao, and Jing Li Xue. "Design of pH Meter Based on msp430." Applied Mechanics and Materials 397-400 (September 2013): 936–42. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.936.

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The pH meter based on msp430 has designed in this paper, and which can accomplish all kinds of functions, for instance, data collection, data analysis, local control and telecommunication. In order to improve the accuracy of data collection we use dual high impedance differential input circuit. And choose temperature transducer DS18B20 which has a function of automatic temperature compensation to reduce the effects of temperature fluctuation on measurement. So it can achieve accurate determination of the pH value of the material.
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12

Jamieson, Jim. "Design of a budget-based pH meter." Electronic Systems News 1989, no. 2 (1989): 29. http://dx.doi.org/10.1049/esn.1989.0041.

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13

Lehmann, H., G. Schwotzer, P. Czerney, and G. J. Mohr. "Fiber-optic pH meter using NIR dye." Sensors and Actuators B: Chemical 29, no. 1-3 (October 1995): 392–400. http://dx.doi.org/10.1016/0925-4005(95)01713-5.

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14

HADIATNA, FEBRIAN, and RATNA SUSANA. "Rancang Bangun Smart pH Meter Sebagai Alat Ukur Pemantau Larutan Nutrisi." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 7, no. 2 (May 24, 2019): 404. http://dx.doi.org/10.26760/elkomika.v7i2.404.

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ABSTRAKPotential of Hydrogen (pH) adalah salah satu parameter penting yang terdapat pada nutrisi tanaman hidroponik. Setiap tanaman memerlukan nutrisi dengan pH sesuai kebutuhannya, agar dapat tumbuh dengan baik. pH nutrisi akan berubah setiap saat, sehingga perlu sering dipantau. Terdapat kendala pada pH meter yang digunakan saat ini, misalnya perlu kalibrasi ulang jika digunakan lebih dari 24 Jam karena elektroda sensor pH rentan terhadap larutan yang diukurnya. Pada penelitian ini dirancang sebuah pH meter cerdas yang akan digunakan untuk mengukur nutrisi tanaman. Alat ukur ini mampu digunakan secara terus menerus selama lebih dari 24 jam. Sensor pH yang digunakan adalah FIT0348 dan ATMega8 sebagai unit kontrolernya. Proses pengujian terdiri dari 4 tahap. Berdasarkan hasil pengujian, disimpulkan bahwa koefisien determinasi pada rangkaian pengkondisi sinyal yang dirancang telah linier yaitu 0,9999 dengan persamaan regresi y=0,0065x+6,189. ΔpH dari pH meter yang dirancang adalah ±0,01 dengan menggunakan PH/EC-9853 sebagai alat ukur pembandingnya.Kata kunci: potensial of hydrogen, pH meter, hidroponik, nutrisi tanamanABSTRACTPotential of Hydrogen (pH) is one of the important parameters found in hydroponic plant nutrition. Every plant needs nutrients with pH according to their needs, so they can grow well. The pH of nutrients will change at any time, so it needs to be monitored frequently. There is a problem with the pH meter used today, for example, it needs recalibration if it is used more than 24 hours because the pH sensor electrode is susceptible to the solution it measures. In this study, a smart pH meter was designed to be used to measure plant nutrient. This measuring instrument can be used continuously for more than 24 hours. The pH sensor used is FIT0348 and ATMega8 as the controller unit. The testing process consists of 4 steps. Based on tests, it was concluded that the coefficient of determination in the signal conditioning circuit designed was equal to 0.9999 with the regression equation y = 0.0065x + 6.189. ΔpH from the pH meter designed is ± 0.01 by using PH/EC-9853 as a comparison measuring instrument.Keywords: potensial of hydrogen, pH meter, hydroponic, plant nutrition
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15

Prasetyo, Agung, Mahananto, Setie Harieni, and Achmad Fatchul Aziez. "PERBAIKAN MEDIA TANAM DENGAN PENGGUNAAN pH METER DAN MOISTURE METER PADA AGRIBISNIS TANAMAN HIAS." GANESHA: Jurnal Pengabdian Masyarakat 1, no. 02 (July 18, 2021): 50–55. http://dx.doi.org/10.36728/ganesha.v1i02.1452.

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Tujuan utama kegiatan pengabdian masyarakat ini adalah untuk menumbuhkan dan mengembangkan kesadaran pentingnya wirausaha dan memberikan pemahaman akan pentingnya media tanam terutamanya menyangkut pH, kelembaban dan intensitas cahaya pada tanaman hias. Metode yang dipakai guna mencapai tujuan yang dimaksud adalah penyuluhan, pelatihan dan pendampingan pembuatan media tanam, penggunaan pH meter dan moisture meter. Penanaman bibit baru yang sudah disesuaikan dengan media tanam sesuai syarat hidup masing-masing tanaman hias. Hasil menunjukan bahwa Pelatihan perbaikan media tanam dengan menggunakan pH meter dan moisture meter mampu meningkatkan pengetahuan mitra akan pH tanah, kelembaban tanah dan intensitas cahaya beserta peranannya bagi kehidupan tanaman hias. Mitra dapat memilih dan mencampur masing-masing media tanam yang disesuaikan dengan jenis tanaman yang diusahakan. Pendampingan diperlukan lebih lanjut terutama menyangkut teknik manajemen tanaman hias karena penataan didalam lokasi usaha petani masih bercampur. ABSTRACT The main purpose of this community service activity is to grow and develop an awareness of the importance of entrepreneurship and provide an understanding of the importance of planting media, especially regarding pH, humidity, and light intensity in ornamental plants. The methods used to achieve the intended objectives are counseling, training, and assistance in the planting media, using pH meters and moisture meters. Planting new seeds that have been adapted to the growing media according to the life requirements of each ornamental plant. The results showed that training to improve planting media using a pH meter and moisture meter was able to increase partners' knowledge of soil pH, soil moisture, and light intensity along with their role in the life of ornamental plants. Partners can choose and mix each planting medium according to the type of plant being cultivated. Further assistance is needed, especially regarding ornamental plant management techniques because the arrangement in the farmer's business location is still mixed.
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16

Ehlers, C., U. I. Ivens, M. L. Møller, T. Senderovitz, and J. Serup. "Comparison of two pH meters used for skin surface pH measurement: the pH meter ‘pH900’ from Courage & Khazaka versus the pH meter ‘1140’ from Mettler Toledo." Skin Research and Technology 7, no. 2 (May 2001): 84–89. http://dx.doi.org/10.1034/j.1600-0846.2001.70205.x.

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17

Jayasundar, Rama, Laurance D. Hall, and Norman M. Bleehen. "Comparison of pH measurements made using31P NMR and a fibreoptic pH meter." NMR in Biomedicine 5, no. 6 (November 1992): 360–63. http://dx.doi.org/10.1002/nbm.1940050607.

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18

Yuliza, Yuliza, and Gatot Susanto. "PERANCANGAN pH METER PADA BOILER HRSG BERBASIS ARDUINO." SINERGI 19, no. 1 (February 1, 2015): 37. http://dx.doi.org/10.22441/sinergi.2015.1.007.

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Air merupakan zat yang sangat dibutuhkan pada setiap sektor industri, termasuk pemanfaatan untuk kebutuhan energi dan pemanasan. Kebutuhan energi dan pemanasan di industri umumnya dipenuhi dengan cara memanfaatkan steam yang dibangkitkan dalam suatu ketel (boiler). Air yang digunakan sebagai umpan boiler dapat diperoleh dari berbagai sumber yaitu danau, sungai, laut, maupun sumur. Kandungan air ini sangat mempengaruhi Harga pH pada air umpan boiler, penting untuk diperhatikan untuk mencegah terjadinya korosi. Terdapat hubungan antara pH dan laju terjadinya korosi pada bahan konstruksi dari logam mild steel yang menunjukan adanya kecenderungan menurunnya korosi dengan naiknya harga pH. Namun pada bahan konstruksi dari logan Cu terjadi sebaliknya, yaitu kecenderungan laju korosi naik dengan menaiknya harga pH diatas pH 9. Dengan perancangan alat berbasis mikrokontroller arduino yang telah dilakukan dan berfungsi dengan baik, diharapkan pH yang terdapat pada water boiler dapat dikontrol nilai pembacaannya dengan baik untuk mencegah korosif pada pipa boiler.
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19

Harris, David L., and Daniel C. Harris. "A low-cost pH meter for the classroom." Journal of Chemical Education 69, no. 7 (July 1992): 563. http://dx.doi.org/10.1021/ed069p563.

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20

DuPre, Donald B., and Warren E. Just. "A Digital pH-mV Meter for Overhead Projection." Journal of Chemical Education 71, no. 12 (December 1994): 1081. http://dx.doi.org/10.1021/ed071p1081.

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21

OKUBO, SHIGEO. "Precautions for use and maintenance of pH meter." Kagaku To Seibutsu 29, no. 6 (1991): 375–78. http://dx.doi.org/10.1271/kagakutoseibutsu1962.29.375.

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22

Langer, Anil, Sunanda Sharma, Narendra Kumar Sharma, and DS Nauriyal. "Comparative Efficacy of Different Mastitis Markers for Diagnosis of Sub-Clinical Mastitis in Cows." International Journal of Applied Sciences and Biotechnology 2, no. 2 (June 25, 2014): 121–25. http://dx.doi.org/10.3126/ijasbt.v2i2.10191.

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Seven hundred ninety six milk samples from 266 quarters of 69 lactating cows were subjected to microbiological investigations for identification of pathogens. One hundred ninety bacterial isolates were recovered from 89 infected quarters, among these monomicrobial infection was found in 50 (56.2%) quarters, whereas, mixed infection was observed in 39 (43.8%) quarters. Bacterial isolates identified were Staph. chromogenes (49.47%), Staph. hyicus (21.1%), Staph. epidermidis (11.05%), Str. agalactiae (5.8%), Staph. aureus (4.2%), Staph. intermedius (3.1%), Enterobacter sp. (1.5%), Klebsiella sp., E. coli (1.05%), Micrococcus sp. (1.05%) and Serratia marcescens (0.52%). Milk samples from every quarter of each cow were also subjected to 6 mastitis marker tests named Somatic cell count (SCC), California mastitis test (CMT), electrical conductivity (EC) by EC-meter as well as by Hand-held mastitis detector, pH detection by impregnated paper strip and also by pH meter. Efficacy of mastitis markers for diagnosis of sub-clinical mastitis was determined by comparing results of mastitis marker tests with microbiological findings. Mean value of SSC in milk from healthy quarters was significantly lower (p than that in milk from infected quarters. Significantly higher (p value of SSC was observed in milk samples having coagulase positive staphylococci as compared to that in milk from quarter with coagulase negative pathogens. The mean electrical conductivity (EC) in milk samples from infected quarters was significantly higher (P<0.05) than that from healthy quarters. Numbers and percentages of samples showing true positive, true negative, false positive and false negative results with SSC, CMT, EC by EC-meter, EC by hand-held meter, pH by impregnated strips, pH by digital pH-meter tests were evaluated and compared. The sensitivity and specificity of impregnated pH paper strip, CMT, pH-meter test, SCC, electrical conductivity by EC-meter and the same by Hand-held mastitis detector were evaluated The compatibility between the results of SCC, impregnated pH paper strip, CMT, EC-meter, pH-meter, Hand-held mastitis detector and bacteriological culture examination (reference test) was found to be 64.4, 63.4, 61.5, 59, 59 and 53 respectively.DOI: http://dx.doi.org/10.3126/ijasbt.v2i2.10191Int J Appl Sci Biotechnol, Vol. 2(2): 121-125
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23

Polat, Muhittin Yağmur, Abdullah Beyaz, and İbrahim Çilingir. "Development of a Low-Cost pH Meter for Liquid Chemical Fertilizers." Turkish Journal of Agriculture - Food Science and Technology 8, no. 4 (April 25, 2020): 840–46. http://dx.doi.org/10.24925/turjaf.v8i4.840-846.2911.

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Liquid chemical fertilizers are widely used in modern agriculture. The pH values of these fertilizers are important in terms of their effectiveness in the field application and their effect on the soil-water pH balance. Therefore, it is necessary to measure the pH and other properties of liquid fertilizers with fast, practical and inexpensive methods. With the advancing technology, pH value has been started to measure more accurately and efficiently with the help of low-cost devices. In this study, a low-cost pH meter was developed using a low-cost pH sensor, an Arduino UNO R3 microcontroller board, and a software written in the C/C++ programming language. The developed pH meter was used to measure the pH values of liquid chemical fertilizers. Close variations were observed between the values obtained from it and the values measured by an accredited, laboratory-type pH meter. According to the pH measurements of the two pH meters, R2 ranged 88.1% to 99.3%, average error range 0.14 to 0.28, and average error percentage ranged 1.56% to 6.81% for three different types of liquid fertilizers. In light of these results, it was shown that the developed low-cost pH meter can be useful for practical pH measurement applications.
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24

Muslu, Bunyamin, Rüveyda I. Demircioglu, Muhammet Gözdemir, and Burhanettin Usta. "Comparison of neck ultrasonography with a pH meter to confirm correct position of nasogastric tube." Clinical & Investigative Medicine 39, no. 6 (December 1, 2016): 153. http://dx.doi.org/10.25011/cim.v39i6.27520.

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Purpose: The aim of this study was to compare pH meter and neck ultrasonograph for evaluation of nasogastric tube (NGT) position. Methods: A total of 35 adult patients who required NGT insertion were included. The NGT was inserted by an anesthetist after endotracheal intubation, and the transducer was placed transversely on the neck, just superior to the suprasternal notch. The passage of the NGT in the esophagus was evaluated by a sonographer, and the stomach was emptied by nasogastric suction. Secretion from inside the NGT was analyzed using a pH meter. The tip of the NGT was accepted as being in the stomach if the pH measured between 1 and 5. Neck ultrasonography was compared with the pH meter analysis for confirmation of NGT position. Results: Ultrasonography was highly sensitive (100% (95% CI 89.6–100%) and specific (97.2% (95% CI 85.4–99.5%) for evaluation of NGT position. The specificity for the pH meter was 100% (95% CI 16.6–100%), while the sensitivity was 76.5% (95% CI 58.8–89.2%). Conclusions: This study showed that neck ultrasonography is more sensitive than the pH meter for confirmation of NGT position.
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25

Devirizanty, Devirizanty, Susiana Nurmalawati, and Candra Hartanto. "PERBANDINGAN UNJUK KINERJA BERBAGAI TIPE pH METER DIGITAL DI LABORATORIUM KIMIA." JURNAL PENGELOLAAN LABORATORIUM SAINS DAN TEKNOLOGI 1, no. 1 (June 15, 2021): 1–9. http://dx.doi.org/10.33369/labsaintek.v1i1.15460.

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Laboratorium Kimia FMIPA UNIB adalah laboratorium yang berkecimpung dalam hal pelayanan pendidikan, penelitian, analisa dan pengabdian kepada masyarakat. Dalam bidang kimia, pengukuran analitik memiliki peranan yang sangat penting. Tujuan dari pengukuran analitik ini adalah untuk menentukan nilai sebenarnya dari suatu parameter kuantitas kimia, contohnya seperti: konsentrasi, pH, dan lain-lain. Pengukuran analitik ini dapat menggunakan metode konvensional maupun modern, baik secara kualitatif maupun kuantitatif.. Dalam setiap pengukuran analitik akan sangat dipengaruhi pengerjaan prosedur yang baik dan benar dan kompetensi dari analis serta pengguna lainnya. Dimana jika peralatan yang dipakai valid dan akurat serta dikerjakan oleh personil yang kompetens maka akan dapat memberikan kontribusi terhadap hasil pengukuran. Setelah dilakukan uji akurasi, presisi dan cek antara pada penelitian ini menyatakan bahwa ketiga jenis Ph Meter yang yang ada di Laboratorium Kimia yaitu pH meter type PH-108 merck ATC, pH meter HI98107 merck Hanna dan pH meter HI 5521/HI 5522 merck Hanna, memiliki unjuk kinerja yang bagus dan akurat, sehingga masih layak dipakai untuk pengujian, praktikum dan layanan pelanggan.
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26

Sato, S. "Development of wireless pH meter and continuous measurements of ruminal pH in cattle." Japanese Journal of Veterinary Clinics 32, no. 2 (2009): 102–3. http://dx.doi.org/10.4190/jjvc.32.102.

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27

Afsahi, Ali, Mahmood Ahmadi-hamedani, and Mohammad Khodadi. "Comparative evaluation of urinary dipstick and pH-meter for cattle urine pH measurement." Heliyon 6, no. 2 (February 2020): e03316. http://dx.doi.org/10.1016/j.heliyon.2020.e03316.

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28

Kirkwood, Jobie, Julie Wilson, Simon O'Keefe, and David Hargreaves. "A high-throughput colourimetric method for the determination of pH in crystallization screens." Acta Crystallographica Section D Biological Crystallography 70, no. 9 (August 29, 2014): 2367–75. http://dx.doi.org/10.1107/s1399004714014011.

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The crystallization of proteins is dependent on the careful control of numerous parameters, one of these being pH. The pH of crystallization is generally reported as that of the buffer; however, the true pH has been found to be as many as four pH units away. Measurement of pH with a meter is time-consuming and requires the reformatting of the crystallization solution. To overcome this, a high-throughput method for pH determination of buffered solutions has been developed with results comparable to those of a pH meter.
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29

Reis, Leonardo F., Antonio H. H. Minervino, Carolina A. S. C. Araújo, Rejane S. Sousa, Francisco L. C. Oliveira, Frederico A. M. L. Rodrigues, Enoch B. S. Meira-Júnior, Raimundo A. Barrêto-Júnior, Clara S. Mori, and Enrico L. Ortolani. "Comparison of Rumen Fluid pH by Continuous Telemetry System and Bench pH Meter in Sheep with Different Ranges of Ruminal pH." Scientific World Journal 2014 (2014): 1–4. http://dx.doi.org/10.1155/2014/195782.

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We aimed to compare the measurements of sheep ruminal pH using a continuous telemetry system or a bench pH meter using sheep with different degrees of ruminal pH. Ruminal lactic acidosis was induced in nine adult crossbred Santa Ines sheep by the administration of 15 g of sucrose per kg/BW. Samples of rumen fluid were collected at the baseline, before the induction of acidosis (T0) and at six, 12, 18, 24, 48, and 72 hours after the induction for pH measurement using a bench pH meter. During this 72-hour period, all animals had electrodes for the continuous measurement of pH. The results were compared using the Bland-Altman analysis of agreement, Pearson coefficients of correlation and determination, and paired analysis of variance with Student’st-test. The measurement methods presented a strong correlation (r=0.94,P<0.05) but the rumen pH that was measured continuously using a telemetry system resulted in lower values than the bench pH meter (overall mean of 5.38 and 5.48, resp.,P=0.0001). The telemetry system was able to detect smaller changes in rumen fluid pH and was more accurate in diagnosing both subacute ruminal lactic acidosis and acute ruminal lactic acidosis in sheep.
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30

McMahon, John J., and Paul R. Braca. "An inexpensive parallel interface to a digital pH meter." Journal of Chemical Education 69, no. 5 (May 1992): A156. http://dx.doi.org/10.1021/ed069pa156.

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31

Karangan, Jufriadi, Bambang Sugeng, and Sulardi Sulardi. "UJI KEASAMAN AIR DENGAN ALAT SENSOR pH DI STT MIGAS BALIKPAPAN." Jurnal Kacapuri : Jurnal Keilmuan Teknik Sipil 2, no. 1 (July 14, 2019): 65. http://dx.doi.org/10.31602/jk.v2i1.2065.

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Tujuan penelitian adalah untuk memberikan gambaran alat uji sensor pH meter SKU SEN0161 untuk pengukuran tingkat keasaman air yang dipergunakan dilingkungan Sekolah Tinggi Teknologi Migas Balikpapan. Metode penelitian yang digunakan adalah metode studi kasus yakni studi kasus kualitas air utilitas dan air domestic. Hasil penelitian menunjukan bahwa pengujian keasaman air dengan alat ukur sensor pH meter SKU SEN0161 dengan kesalahan 1.65% dan tingkat akurasi 98.35% terhadap alat ukur pH standar. Dari hasil penelitian selanjutnya memberikan saran bahwa alat ukur sensor pH dapat digunakan sebagai alternative pengukuran keasaman air disamping pengukuran secara manual dengan kertas lakmus.The purpose of the study was to provide an overview of the pH meter sensor sensor test SKU SEN0161 for measuring the acidity of water used in the Balikpapan Oil and Gas Technology College. The research method used is a case study method that is a case study of the quality of utility water and domestic water. The results showed that testing the acidity of the water with a pH meter sensor measuring instrument SEN0161 with an error of 1.65% and an accuracy rate of 98.35% for a standard pH measuring instrument. From the results of further research, it is suggested that the pH sensor can be used as an alternative measurement of water acidity in addition to manual measurement with litmus paper.
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Cheng, Dong-sheng, R. Michael Rodriguez, Jeffrey Rogers, Marvin Wagster, Daniel L. Starnes, and Richard W. Light. "Comparison of Pleural Fluid pH Values Obtained Using Blood Gas Machine, pH Meter, and pH Indicator Strip." Chest 114, no. 5 (November 1998): 1368–72. http://dx.doi.org/10.1378/chest.114.5.1368.

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Solana, Maria José, Jesús López-Herce, César Sánchez, Marta Cordero, Javier Urbano, Marta Botrán, Jimena del Castillo, Jose María Bellón, and Angel Carrillo. "Comparison of continuous pH-meter and intermittent pH paper monitoring of gastric pH in critically ill children." European Journal of Gastroenterology & Hepatology 24, no. 1 (January 2012): 33–36. http://dx.doi.org/10.1097/meg.0b013e32834d4bac.

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34

Putra, Yudi Eka, Sri Ratna Sulistiyanti, and Muhamad Komarudin. "Sistem Akuisisi Data Pemantauan Suhu dan Kadar Keasaman (pH) Lingkungan Perairan dengan Menggunakan Unmanned Surface Vehicle." Electrician 12, no. 3 (September 4, 2018): 84. http://dx.doi.org/10.23960/elc.v12n3.2090.

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Intisari — Air merupakan sumber kehidupan yang sangat penting bagi kehidupan manusia sebagai bahanbaku air minum, keperluan rumah tangga, dan sumber energi pembangkit listrik tenaga air. Kondisi perairansangat dipengaruhi oleh aktifitas manusia. Salah satu dampak negatif dari aktifitas manusia yaitu timbulnyalimbah yang dapat merusak ekosistem perairan, dengan mengetahui kondisi perairan kita dapatmengoptimalkan penggunaaan air dalam kehidupan. Oleh karena itu, diperlukan sistem yang dapat memantaukondisi suhu dan kadar keasaman (pH) perairan secara real-time menggunakan PC dan nirkabel. Sistem inidinamakan sistem akuisisi data yang menggunakan sensor suhu, modul analog pH meter, telemetri, dan USV.Pemeroses data menggunakan Arduino Mega 2560. Media transmisi data nirkabel menggunakan Telemetri Kit433 MHz. Media penampil data menggunakan PC berbasis GUI (Graphical User Interface) dengan perangkatlunak LabVIEW. Dalam menentukan kondisi perairan, dapat dilakukan dengan mengetahui kondisi beberapaparameternya yaitu parameter fisik (suhu) dan parameter kimir (pH). Berdasarkan hal tersebut dilakukanpengukuran nilai suhu dan pH pada perairan. Sistem akuisisi data yang dilengkapi dengan sensor suhu DB10S20, Analog pH meter, Arduino Mega 2560, dan Telemetri Kit 433 Mhz. Sistem ini diletakan pada USV yangtelah diatur untuk bergerak menuju titik waypoint, melakukan pengukuran pada titik waypoint tersebut danmenampilkan data serta menyimpan data dengan data logger. Sensor DB 10S20 dikalibrasi menggunakanFLUKE 62 MAX IR Thermometer dan Analog pH meter menggunakan pH indikator universal. Sistem ini dapatdigunakan selama sumber tegangan mencukupi serta jarak pengiriman data yaitu line of sight ≤ 50 m dandalam bangunan ≤ 15 m. Pemantauan suhu dan kadar keasaman (pH) pada daerah resapan air UniversitasLampung diketahui bahwa setiap kenaikan suhu sebesar 1° Celcius maka terjadi kenaikan pH sebesar 0,09.Kata Kunci — Air, Analog pH Meter, Arduino, DB 10S20, FLUKE 62 MAX IR Thermometer, LabVIEW, pH,Sistem Akuisisi, Suhu, Telemetri, USV,Waypoint.Abstract — Water is one of many important natural resource that human need to consume for many necessitieslike house-need and electricity. But there are some negative impact that produced by human activity that coulddamages the water as important life resource. Yet, by analyzing the water condition, we may optimalize theusage of water. Then, it is necessery to have a proper system which able to supervise the water temperature andacid content (pH) in real-time by using PC and wireless equipment. This system is called by data acqusitionsystem which include the usage of temperature sensor, an analogue modul pH meter, telemetry and USV.Arduino Mega 2560 is chosen as data processor in this research case. Wireless transmission data isacommodated by Telemetry Kit 433 MHz. While data performance media is provided by GUI (Graphical UserInterface) based PC as specified software known as LabVIEW. There are some parameters to be connected tothe water condition, which are physical parameter (temperature) and chemical parameter (pH). Based onmethod above water temperature and pH is measured. Data acquisition system is supported by DB 10S20temperature sensor, pH meter analogue, Arduino Mega 2560 and Telemetry Kit 433 Mhz. This system is placedon USV which systemized to move forward to the waypoint spot, then it start to measure at the waypoint spot,perform and save the data by data logger. DB 10S20 sensor is calibrated by FLUKE 62 MAX IR Thermometerand the pH meter analogue is using pH universal indicator. The system could be occupied as long as the powerresource is able to covered the data delivering in line of sight of ≤ 50 m and ≤ 15 m indoor. Temperaturemonitoring and pH in water absorbtion area at Lampung University is known when every 1° Celcius thetemperature increased then pH increase to be 0,09.Keywords — Acqusition System, Arduino, DB 10S20, FLUKE 62 MAX IR Thermometer, Labview, pH, pH MeterAnalogue, Telemetry, Temperature, USV, Water, Waypoint
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Wati, Dewi Ratna, and Walidatush Sholihah. "Pengontrol pH dan Nutrisi Tanaman Selada pada Hidroponik Sistem NFT Berbasis Arduino." MULTINETICS 7, no. 1 (March 15, 2021): 12–20. http://dx.doi.org/10.32722/multinetics.v7i1.3504.

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Metode yang digunakan sistem hidroponik di BBP2TP sebagai tempat edukasi serta pembelajaran mengenai pengkajian dan pengembangan teknologi pertanian masih manual. Hal tersebut dapat dilihat saat petugas melakukan pengecekan nilai pH dan nutrisi, dimana petugas harus mendatangi tempat instalasi hidroponik untuk mengukur nilai pH dan nutrisi ke dalam tandon air dengan menggunakan alat berupa pH meter dan TDS meter. Jika nilai pH dan nutrisi belum sesuai maka dilakukan penambahan cairan pH atau nutrisi ke dalam tandon air hingga nilai pH dan nutrisi sesuai dengan yang diinginkan. Teknologi Smart Farming memungkinkan suatu alat yang dapat mengukur dan melihat nilai pH dan nutrisi sistem hidroponik. Arduino yang dapat membuat sistem menjadi otomatis, Sensor pH berfungsi sebagai pengukuran pH, Sensor TDS sebagai alat mengukur nilai nutrisi dan LCD 20x4 digunakan utuk melihat nilai pH dan nutrisi. Sehingga ketika nilai pH dan nutrisi berkurang, secara otomatis arduino akan menjalan sensor pH atau TDS untuk menyalakan pompa pH atau nutrisi. Saat nilai pH dan nutrisi telah sesuai maka pompa pH dan nutrisi akan terhenti. Dengan adanya sistem ini maka perkerjaan petugas lebih efisienMetode yang digunakan sistem hidroponik di BBP2TP sebagai tempat edukasi serta pembelajaran mengenai pengkajian dan pengembangan teknologi pertanian masih manual. Hal tersebut dapat dilihat saat petugas melakukan pengecekan nilai pH dan nutrisi, dimana petugas harus mendatangi tempat instalasi hidroponik untuk mengukur nilai pH dan nutrisi ke dalam tandon air dengan menggunakan alat berupa pH meter dan TDS meter. Jika nilai pH dan nutrisi belum sesuai maka dilakukan penambahan cairan pH atau nutrisi ke dalam tandon air hingga nilai pH dan nutrisi sesuai dengan yang diinginkan. Teknologi Smart Farming memungkinkan suatu alat yang dapat mengukur dan melihat nilai pH dan nutrisi sistem hidroponik. Arduino yang dapat membuat sistem menjadi otomatis, Sensor pH berfungsi sebagai pengukuran pH, Sensor TDS sebagai alat mengukur nilai nutrisi dan LCD 20x4 digunakan utuk melihat nilai pH dan nutrisi. Sehingga ketika nilai pH dan nutrisi berkurang, secara otomatis arduino akan menjalan sensor pH atau TDS untuk menyalakan pompa pH atau nutrisi. Saat nilai pH dan nutrisi telah sesuai maka pompa pH dan nutrisi akan terhenti. Dengan adanya sistem ini maka perkerjaan petugas lebih efisien
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36

Jee, Hyun Suk, Yong Bum Park, Jae Chol Choi, Chang Hyuk Ahn, Ji Hoon Yoo, Jae Yeol Kim, In Won Park, and Byoung Whui Choi. "Comparison of blood gas analyser, pH meter and pH Strip methods in the measurement of pleural fluid pH." Tuberculosis and Respiratory Diseases 48, no. 5 (2000): 773. http://dx.doi.org/10.4046/trd.2000.48.5.773.

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37

Kilpatrick, E. S., A. G. Rumley, and E. A. Smith. "Variations in Sample pH and pO2Affect ExacTech Meter Glucose Measurements." Diabetic Medicine 11, no. 5 (June 1994): 506–9. http://dx.doi.org/10.1111/j.1464-5491.1994.tb00315.x.

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38

De Coninck, Vincent, Etienne Xavier Keller, María Rodríguez-Monsalve, Steeve Doizi, Marie Audouin, Jean-Philippe Haymann, and Olivier Traxer. "Evaluation of a Portable Urinary pH Meter and Reagent Strips." Journal of Endourology 32, no. 7 (July 2018): 647–52. http://dx.doi.org/10.1089/end.2018.0202.

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39

Wockenfus, Amy M., Christopher D. Koch, Patricia M. Conlon, Linda D. Sorensen, Kari L. Cambern, Amy J. Chihak, Julie A. Zmolek, et al. "Discordance between urine pH measured by dipstick and pH meter: Implications for methotrexate administration protocols." Clinical Biochemistry 46, no. 1-2 (January 2013): 152–54. http://dx.doi.org/10.1016/j.clinbiochem.2012.10.018.

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40

Wang, Qiang, Shi Dong Wang, Ming Chen Qi, and Shu Liang Zang. "Synthesis and Characterization of Alkeyl Imidazolium Ionic Liquids." Advanced Materials Research 1048 (October 2014): 452–55. http://dx.doi.org/10.4028/www.scientific.net/amr.1048.452.

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Two new imidazole ionic liquid salts, 1-allyl-3-methylimidazolium chloride ([AMIM]Cl) and 1-allyl-3-methy-imidazolium hydrogen sulfate ([EMIM]HSO4), were synthesized with direct synthesis and two-step synthesis method, using a viscosity meter, PH meter, conductivity meter, densitometer, infrared spectrometer determined its chemical structure and properties. The results show that two ionic liquids in the range is slightly different, the trend is roughly same. As the temperature increases, the viscosity decreases, PH gradually increased, the density decreases slightly, can be regarded as constant, the conductivity gradually increased. Ionic liquids of the two IR spectra analysis show its structure and synthetic route consistent with the structure of matter.
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41

Bradley, J. Shane, Jeffrey O. Phillips, Joseph E. Cavanaugh, and Michael H. Metzler. "Clinical utility of pH paper versus pH meter in the measurement of critical gastric pH in stress ulcer prophylaxis." Critical Care Medicine 26, no. 11 (November 1998): 1905–9. http://dx.doi.org/10.1097/00003246-199811000-00037.

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42

Stachowiak, Sonia, Aleksandra Buszmak, Teresa Matthews-Brzozowska, and Leszek Kubisz. "Instrumental possibilities of skin parameters assessment — literature review." Journal of Face Aesthetics 3, no. 2 (December 31, 2020): 122–32. http://dx.doi.org/10.20883/jofa.37.

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The authors reviewed the literature on the most commonly used devices for measuring skin parameters. The instruments were selected to measure: skin elasticity Cutometer® (Courage-Khazaka, Koln, Germany), Reviscometer® RVM600; hydration while using skin properties such as resistance, capacity, conductivity and impedance, the Corneometer CM 820 and CM 825 (Courage & Khazaka, Koln, Germany), Nova DPM 9003 (Nova Technology Corporation, Gloucester, MA, USA), DermaLab® USB Moisture Module (Cortex Technology, Hadsund, Denmark) and Scalar Moisture Checker MY-808S (Scalar Corporation, Japan), to test percutaneous water loss (TEWL) with Tewameter® TM 300 (Courage-Khazaka, Koln, Germany); high-frequency ultrasound scanners Dub®SkinScanner 75 (TPM Company, Lueneburg, Germany), DermaScan® C USB (Cortex Technology, Hadsund, Denmark); for pH measurement Skin-pH-Meter PH 905 (Courage-Khazaka, Koln, Germany), Skin-pH-Meter PH 900 (Courage-Khazaka, Koln, Germany, pH-Meter 1140 (Mettler Toledo, Urdorf, Switzerland); skin sebum is tested by Sebumeter® SM 815 (Courage-Khazaka, Koln, Germany); the Mexameter® MX 18 (Courage-Khazaka, Koln, Germany), CM-2600d Spectrophotometer (Konica Minolta, Tokyo, Japan) and Minolta Chromameter CR-200 (Konica Minolta, Tokyo, Japan. The analysis of measuring devices available on the market introduces the mechanism of their operation and application.
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Pauzi, Gurum Ahmad, Okta Ferli Suryadi, Gregorius Nugroho Susanto, and Junaidi Junaidi. "Rancang Bangun Sistem Monitoring Kualitas Air Tambak Udang (Litopenaeus Vannamei) Menggunakan Wireless Sensor Sistem (WSS) yang Terintegrasi dengan PLC CPM1A." Journal of Energy, Material, and Instrumentation Technology 1, no. 3 (November 30, 2020): 103–12. http://dx.doi.org/10.23960/jemit.v1i3.34.

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The research about pH, salinity, dissolved oxygen, and temperature monitoring system using Arduino Uno integrated with PLC CPM1A for water quality control of shrimp farm litopenaeus vannamei had done. The system used pH meter kit Dfrobot sensor, salinity sensor, DS18B20 waterproof sensor, and analog dissolved oxygen sensor which was controlled by Arduino UNO. In order to calibrate the sensor, pH meter kit Dfrobot sensor was calibrated by using a buffer solution, salinity sensor was calibrated by refractometer, DS18B20 waterproof sensor was calibrated by HTC-02 thermometer, and an analog dissolved oxygen sensor was calibrated by DO meter YSI 55. The results showed that the sensors can detect pH, salinity, dissolved oxygen and temperature with accuracy 94.06%, 78.15%, 90.53% and 99.42% respectively. It is transmitted wireless by using the nRF24l01+ module. The furthest distance in the line of sigh test was 405 meters and in non-line of sigh was 163 meters. The measurement had done 3 times per day (morning, afternoon, evening) in 3 days. The relay also can be integrated with PLC CPM1A to control the wheel and water pump.
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44

Rasbury, E. Troy, and N. Gary Hemming. "Boron Isotopes: A “Paleo-pH Meter” for Tracking Ancient Atmospheric CO2." Elements 13, no. 4 (August 1, 2017): 243–48. http://dx.doi.org/10.2138/gselements.13.4.243.

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The boron isotope composition of calcium carbonate shells of marine organisms has the unique potential to record surface ocean pH, allowing the calculation of atmospheric pCO2 due to the established relationship between pH and the partial pressure of (atmospheric) CO2 (pCO2). This “paleo-pH meter” allows scientists to produce a record of the natural fluctuations of atmospheric pCO2 over geologic time, which will help us better understand the impacts of the recent anthropogenic addition of CO2 to Earth's atmosphere. Towards this end, a tremendous effort to understand the systematics of boron uptake in marine carbonates is underway. Here, we review the potential of boron isotopes to constrain ocean pH and, thus, atmospheric pCO2.
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Lilia wati dewi pratami, Her Gumiwang Ariswati, and Dyah Titisari. "Effect of Temperature on pH Meter Based on Arduino Uno With Internal Calibration." Journal of Electronics, Electromedical Engineering, and Medical Informatics 2, no. 1 (January 6, 2020): 23–27. http://dx.doi.org/10.35882/jeeemi.v2i1.5.

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pH Meter is a device used to express the level of acidity or basicity possessed by a substance or solution. Normal pH has a value of 7 while the pH value> 7 indicates that the substance has alkaline properties while the pH value <7 indicates acidic properties. pH 0 shows a high degree of acidity, and pH 14 shows the highest degree of alkalinity. pH Meter reads the pH and temperature values ​​in a sample. The author uses glass electrodes as a pH sensor, DS18B20 as a temperature sensor and LCD to make pH and temperature values. This module is equipped with an internal calibration that is used to set the module to read the pH value properly and correctly using a pH buffer and equipped with internal storage and this module facilitates battery usage. Based on pH measurements on the module the error value in buffer 4 calibration is 5.39%, in buffer 7 is 1.76%, in buffer 10 is 1.04%. The highest error value in the measurement sample is 3.54% and the lowest error value is 0.03%. The temperature of the sample is very influential on the reading of the pH value because the higher the temperature the pH value also increases even though it is not so significant.
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Guimarães, Aldo Marçal, Adriane Wosny Guimarães, Amanda Wosny Guimarães, Carla Maria Lima Olivi, Clara Ozeny Lima Olivi, Ana Paula Santos Oliveira Brito, Rafael Oliveira Chaves, et al. "Development of a portable prototype: pH meter for prolonged esophageal pH monitoring with low cost materials." International Journal of Advanced Engineering Research and Science 7, no. 4 (2020): 107–18. http://dx.doi.org/10.22161/ijaers.74.12.

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47

Sigel, Helmut, Andreas D. Zuberbühler, and Osamu Yamauchi. "Comments on potentiometric pH titrations and the relationship between pH-meter reading and hydrogen ion concentration." Analytica Chimica Acta 255, no. 1 (December 1991): 63–72. http://dx.doi.org/10.1016/0003-2670(91)85088-a.

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48

Kautsari, Neri, and Yudi Ahdiansyah. "Carrying Capacity and Site Suitability of Labuhan Terata Waters of Sumbawa During Transition Season (Karakteristik Fisika-KimiDaya Dukung dan Kesesuaian Lahan Perairan Labuhan Terata, Sumbawa untuk Pengembangan Budidaya Rumput Laut )." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 20, no. 4 (December 3, 2015): 233. http://dx.doi.org/10.14710/ik.ijms.20.4.233-238.

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Perairan Labuhan Terata, Sumbawa, Nusa Tenggara Barat merupakan perairan yang sangat penting keberadaannya bagi masyarakat Labuhan Terata karena peran pentingnya sebagai daerah perikanan terutama dalam budidaya rumput laut, namun kajian daya dukung dan kesesuaian lahan perairan bagi pengembangan budidaya rumput laut masih belum banyak diketahui. Tujuan dari penelitian ini ialah untuk mengetahui daya dukung dan kesesuaian lahan perairan untuk pengembangan budidaya rumput laut. Penelitian ini telah dilakukan pada bulan Mei sampai Juni 2015. Data Arus, suhu, pH, kecerahan, oksigen terlarut, salinitas, nitrat dan fosfat diambil dari permukaan perairan pada lima stasiun pengamatan. Suhu perairan diukur dengan thermometer Hg, oksigen terlarut dengan menggunakan DO meter, pH perairan dengan pH meter, nitrat dan fosfat dianalisis dengan metode spektrofotometri. Hasil penelitian menunjukkan bahwa nilai kesesuaian lahan ke–lima stasiun berada dalam kategori sesuai bersyarat. Kata kunci: daya dukung, kesesuaian lahan, rumput laut, perairan Labuhan Terata, Sumbawa Labuhan Terata Waters, Sumbawa, West Nusa Tenggara is one of the waters are very important for Labuhan Terata peoples because function for fisheryes especially seaweed cultivation, but asses carrying capacity and site suitability of waters is minus. The research objective was to assess carrying capacity and site suistability in the Labuhan Terata waters at transititions season. This research have been carried out in Mey to June 2015. Current, brightness, temperature, dissolved oxygen (O2), acidity (pH), salinity, phosphate and nitrate parameters was measured directly from a layer surface at five research stations. The degree of temperature was measured thermometer Hg, acidity (pH) was measured with pH meter, dissolved okxygen was measured dissolved oxygen meter (DO meters), measurement of nutriens (phosphate & nitrate) concentration used spectrophotometri method. The result of the analysis showed that the value of site suitability of the five stations are in the category conditional suitable. Key words: carrying capacity, Site Suitablity, seaweed culture Labuhan Terata Waters, Sumbawa
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Chau, F. T., and K. W. Mok. "A computerized temperature measuring system using a commercial pH/ISE meter." Journal of Chemical Education 68, no. 8 (August 1991): A201. http://dx.doi.org/10.1021/ed068pa201.

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50

Rashid, Amirul Abd, Nor Hayati Saad, Daniel Bien Chia Sheng, and Lee Wai Yee. "Gauge Repeatability and Reproducibility Assessment: pH Meter for WO3 Hydrothermal Synthesis." Advanced Science Letters 20, no. 10 (October 1, 2014): 2275–77. http://dx.doi.org/10.1166/asl.2014.5722.

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