Answer / tanhaji b.

pH means hydrogen ion concentration.
Which help for constant Retention time and early peak elution.which is Selected on the basis of Pka and Pkb value .

tell me about aliphatic acid estimation by hplc which columns can we use

1 Answers   Dr Reddys,

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How to caluculate the RRF and correction factor in hplc

1 Answers   Alkem Labs, Aurobindo, Rakshit Drugs, SDLPL,

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what is the principle involved in turbidometry and nephelometry ?

0 Answers   Graviti Pharmaceuticals,

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Why six unit used for precision?

0 Answers  

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How to prepare 50 ppm ammonia solution form 25% ammonia solution?

8 Answers   Cadila, IIT,

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when we have polar type of sample and solvnt hen which type of stationry phase we have to use

3 Answers  

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what is mean by extactable and leachable study?

0 Answers  

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What is the difference between the optics of UV and PDA Detectors ?

3 Answers   Emmennar, Neuland,

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for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol

1 Answers   Watson Pharmaceuticals,

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identification is for unknown? qualification for known? reporting for LOQ?

0 Answers  

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Is sonication essential in solubility testing of a drug substance?

6 Answers   Aurobindo,

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what are the primary standards of redox titrations?Name any two.

2 Answers   Laurus,

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