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
anyware.
As per usp the difference between two adjacent buffers
should not more than 4.
Regards
pharmainterviewquestions.blogspot.in
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
0.059=slope
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 |
What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?
What about karl fischer reaction mechanism ?
how to prepare solution in ppb
from where i get mortar pastle for glass bottle crush? it's required for testing of it?
What is the definition of RRF
why salicylic acid not use for dissolution.
2 Answers Cipla, Indo Baijin Chemicals,
why we conclude the area% for the chromatographic purity?
1 Answers Amneal Pharmaceuticals, Lupin,
why chiral separation?
what is the definition of Precision.
How can we calculates the solubility of the drug in different medias by injecting in to hplc????(solubility studies)
2 Answers Super Pharmaceuticals,
if you have given one product then how you determine the impurity in that?
What is normality