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for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol
1 5998we run the same sample in same method in different flow rates in HPLC,any changes in sample analysis?
2 7405For limit test of heavy metals in BP, Method C require that the substance is ignited at a temperature not exceeding 800 °C. Why confines such the temperature?
4011For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?
2265stability study is going on up to 3years for famotidine-USP but the pharmacopeia is revised and tlc test is replaced with hplc test. At the 4th year frequency the product is failed in hplc test .how can i assain the expiry or retest date and can i stop or continue the programme?
2 6513Post New Analytical Chemistry Questions
what is the principle of UV Vis spectroscopy, AAS, ICP OES,ICPAES, ICP-MS and FTIR
how you start RS method development when for new product?
Which parameter require to do for analytical method equivalency?
in gas chromatography what is the difference between gas flow rate and average linear velocity ?
what type of question will ask in the interview of lab chemist.
We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?
what is the structure of DOWEX-50
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?
if identification threshold crosses the limits then what next step?
please explain about aluminium hydroxide assay
what is the principle involved in turbidometry and nephelometry ?
How to do regeneration of Metacarb Pb plus column?
is it nessesary to do solution stability for 7 days?
How require to develop GC method? how to select diluent, GAS, column selection and other chromatographic conditions?
What is Band broading effect explain
