Which is the best mobile phase to separate organic acids using C8 column. And how should the samples be prepared for hplc?1 1690
Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?
How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample791
What is third generation HPLC Columns?533
what is third integration580
Why sodium hydroxide used for maintain pH of phosphate buffer764
How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample
In performance Check of GC Why Hexadecane Peak is Considered
In Dissolution Test why limit is define Q+5% what is the role of +5%.
function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?
what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?
What is the pilot-plant in pharma sector.
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 do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?
what are the standard methods for HPLC?
What is importance of pH in the Heavy metal test and How it effect on the test results?
how to calibrate hplc & gc
in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result
What is the principle of Thermal conductivity detector and FID?
What is the difference between qualitative and quantitative analysis (hplc)