Answer / s jagadeesh chandra

First of all DST is a crystallin hydrate.

Dst is used in factor determination using karl fischer
titration bcos....

1) It absorbs precise amounts of water.
2) It contains therotically caliculated water content.
ie.. 15.66% of water.Water content in dst is constant
in more cases,ie it can with stand small changes in
climatic and temp changes in laboratory.
3) Easily available in market with 100% purity in reagent
grade.And it is a primary standard too.

Answer / praveena

for hardness

why we study matrixing in stability system in stability study and on what basis we select time point.

0 Answers   Hetero,

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What are the stability zones and stability conditions?

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what is relative response factor in related substance

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What is recovery factor?

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