why we are using hexane in calibration of number of drop per mL
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why phenolpthalin gives pink colour when we titrate aganist sodium hydroxcide & phenolpthalin gives colourless titrate aganist hydrochlric acid which is un burate
why we want incorporate area of each solution of Intermediate precision and repeatability as well as Accuracy ? What is the use to incorporate area of each solution of Intermediate precision and repeatability as well as Accuracy ?
acceptance criteria for ph meter, hplc detector,pump,injector,oven when we calibrate.
Why we compare unequal concentrated solutions in heavy metals test. For example comparing the test solution with 1 ppm lead standard and telling it's less than 20ppm?
1 Answers Micro Labs, Mistair,
In lcms analysis some times we get sodium and potassium adducts. if the compound is havine sodium ions how can we confirm wether sodium is from sample or it is a adduct?
2 Answers Teva Pharmaceuticals,
what is batch no. of prednisole tablet.
Why we more noise in PDA detector compared to UV detector?
could negative ions be produced by bombardment process in mass spectrometry?
why require to do water content for drug product?
in monograph 7 imp are there but in vendor showing 5 imp do not req to include 2 imp for that what will be justification?
why r u using hplc grade solvents
Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6
0 Answers Apex Encon Projects Private Limited, Cipla,
Organic Chemistry 
