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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 6070we run the same sample in same method in different flow rates in HPLC,any changes in sample analysis?
2 7518For 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?
4073For 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?
2314stability 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 6623Post New Analytical Chemistry Questions
If suppose 10 methods of dissolution given in pharmacopoeial for single content product then which method out of 10? or all 10 require to follow?
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...
if you given one product then which tests you will perform?
which situation gc hs and gc als require to use?
What is the accrptance criteria in RSD for RS method precision on basis of impurity percentages?
what is mean by peak intigrity?
What is the main difference between ODS1 and ODS2 Hplc column.
In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?
What is diffrence between extractable volume and deliverable volume? Answer pls
What is importance of pH in the Heavy metal test and How it effect on the test results?
in api coa contains only process impurities and in product coa contains degradation impurities?
why we are using hexane in calibration of number of drop per mL
Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6
why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?
How would you decide dissolution medium for NCE compound of class I drug
