why we are used 4,7,9,2 buffers for the ph calibration
Answers were Sorted based on User's Feedback
Answer / pharmainterview
Basic concept is you need to check in acidic,neutral and
basic range. By covering all these regions you can check
As per usp the difference between two adjacent buffers
should not more than 4.
|Is This Answer Correct ?||41 Yes||0 No|
Answer / amarsingh
Because by using this all pH buffer we can cover all range
of pH (Acidic , Neutral & Basic ) So we use this range
|Is This Answer Correct ?||16 Yes||4 No|
Answer / pankaj shrivastava
Calibration points should cover required ph adjustment of
solution. if you use only 2 to 7 ph range for ph adjustment
then you can calibrate the ph with 2.4.7 ph.
|Is This Answer Correct ?||2 Yes||1 No|
Answer / arash babakhanian
pH is determined from this equation in the pH meter
pH = [(Eobs-K)/0.059]n
Eobs= observed potential
K= constant paramere
constant parameters k and 0.059 should be calibrated. In
fact two acidic buffers and two alkalic buffers are used to
fix slope and K constant . In this case, the relation
between Eobs and pH is analyticaly change
|Is This Answer Correct ?||1 Yes||2 No|
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