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

i completed b.pharmacy now iam preparing for drug inspector post so iwant a model question paper for that if it is there plz send me to my mail id

4 Answers   Pacific College of Pharmacy, RPG,

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2 Answers  

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1 Answers   Emcure,

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5 Answers   Cadila,

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3 Answers  

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0 Answers  

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1 Answers  

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0 Answers   Ranbaxy,

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1 Answers   Hetero, SGS,

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