In Analytical method development related substance method when did follow w/w method when did follow area normalisation method
2 12898In Analytical method development related substance method when did follow w/w method when did follow area normalisation method
5 14332what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?
3084I have 1 gram of Diphenylamine and want to make a 10,000 or 1000 ppm solution in methanol. How do I make this?
9 13689Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?
2280why 1.2%kcl solution is using in limit os straylight?and why this test used for uv calibration?
1 7189Post New Analytical Chemistry Questions
in api coa contains only process impurities and in product coa contains degradation impurities?
Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?
How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.
what is third integration
WHAT IS THE USE OF STARTER ?????????
As per ICH related substances stability trend limit from initial to shelf life
My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards
Why to use propyl paraben in HPLC gradient calibration
why we should take dst factor for below 1%moisture samples
process of Diclofenac sodium,IP.
Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?
What is viod volume and peak purity in HPLC?
What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio
why glutent are detected in the rice cereal baby food product even manufacturer claimed that they are using rice and milk only?we have using ELISA to do the test,and rice supposed not containing any glutent,rite?We already repeat the test so many times and it still detected.just wondering where the glutent came from?
Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6