Answer Posted / ashish patel

To control and monitor isomeric impurity (only toxic) 

why digestion require in icpms?

776

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what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?

4494

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mahagenco syllabus for the post of chemist

6481

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USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

2016

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if your product is soluble in 0.1n hcl and water then which you choose as media from these 2 media?

684

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We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy

1909

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Hi sir if any product monograph not given known impurities (may be 5 impurities) specifications then how we require to proceed for inhouse formulation?

707

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Did anybody have method for acetyl cysteine effervescnce tablet

2254

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why xterra column require to use at higher ph?

920

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in which situation require to use paddle and basket?

741

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why cone formation during dissolution?

791

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If we have 5 strength which is not dose proportinate and excipients also diffrent in each strength then how we can proceed for Force degradation? and excipient are same but not dose propotinate the how FD?

806

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2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.

2224

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Please give idea about method development for cleaning method and how maco level establish

753

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what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

2025

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