Answer Posted / devendra birla syncom formulat

OVI measuring by using water as a diluent for standard and test preparation. OVI is nothing but it is also residual solvent combine with analytes durring its purification. In other word residual solvents may be varry by different manifactrures it depend on their manifacturing process so we can say that the Residual solvents are part of OVI.

in DMF having extra impurities and in api COA also having extra imp than USP or BP product then how require to proceed?

884

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What is the formula for relative diffrence for standard solution in solution stability in validation?

858

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why we use a particular hplc column for a particular compound give reasons?please

2788

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How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.

2359

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what is mean by ambient temperature?

973

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What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio

1964

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if tech transfer fails whay require to do?

892

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A ha tc is actual defination of retention time?

1662

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how to calibrate hplc & gc

4556

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why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

2358

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CAN WE DETERMINE THE PEAK PURITY IN GAS CHROMATOGRAPHY ANALYSIS?

1259

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what type of question will ask in the interview of lab chemist.

3362

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why salisylic acid not using now days for disdolution calibration?

836

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when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

2094

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in which situation require to use paddle and basket?

791

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