Answer Posted / john

To maintain  ph level

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

1833

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what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?

836

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function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

2611

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what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

1924

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cefoperozone and sulbactam inj. hplc test method

2644

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how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,

2532

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please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development

1577

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Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?

2900

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1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.

2832

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Why sodium hydroxide used for maintain pH of phosphate buffer

2333

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why we are using benzene, anyline in acetic anhdride assay titration method?

2065

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

3265

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Which parameters require to do in tech transfer?

682

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why holium oxide prepared in 10% HCLO4 SOLUTION

1407

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in which situation ion pair require to use?

747

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