Answer Posted / viswanathan

HPLC:
Exact quantification method.in case of any impurity present in the same it will eluted in the different RT.

Potentiometer:This also quantification method,it will not suitable for all the sample.Because if any impurity present in the sample it will consume the titrant.so that it is not correct method.

What is similarity factor and its use in api strength?

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what is classification of elemental impurities? what is risk assement in elemental impurities?

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i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

2719

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WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY

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

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Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6

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what is partion and column chromatography

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My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

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why require to add enzymes in capsules dissolution only? is it require to tablet also?

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how to set sample and standard concentration in RS method?

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What is column in chromatography?

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How would you decide dissolution medium for NCE compound of class I drug

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why require the ph, buffer during hplc mobile phase?

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A ha tc is actual defination of retention time?

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what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

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