why should we calibrate pH meter with 4,9.2 and 7.4 buffers particularly?
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Answer / rajasekhar
Difference between any two buffer intevels should be not more than 4 .so generally we use PH4,PH7.4,PH9.2
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / sudhakar tambe
It is three point pH calibration one acidic one basic and
one neutral.Buffer PH 4 is acidic 9.2 is basic and 7.4is
neutral
| Is This Answer Correct ? | 3 Yes | 3 No |
Answer / vijayakrishna
for to find the slop of ph and depending on temperature to use different buffer in calibration of ph
| Is This Answer Correct ? | 1 Yes | 1 No |
there was nothing particularity in pH meter calibration, as per our utility in lab or products, we will fix those particular points
in my lab, 1.68, 4.00-acid
7.00-Neutral
10.01,12.45-base
and also we can follow as per usp or some other compendial specs
| Is This Answer Correct ? | 0 Yes | 3 No |
Answer / hemant hatwar
terai gand mai dalu gya electrode ..................
| Is This Answer Correct ? | 2 Yes | 6 No |
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Dear sir, This is R.Kadambavadani working in a pharma industry. while doing RS analysis of ibuprofen API, unknown peak eluting some times in the 0.6 Min RT. Kindly send me what is the exact reason behind that. also am using ACN the mobile phase.
Organic Chemistry 
