which effect is mainly responsible for chromatographic separation when silica is the statinary phase at TLC? thanks in advance
1 3018what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?
1432Why we are having specification 100% above in case of assay as there is only 100% of compound?
2 4789While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?
2250which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc
1652what is the concept for adjustment of pH in HPLC buffer solution ? a. Common ion effect b. Counter ion effect and explain me, how we adapt this principles & what is the role of these principles in our method
1 2530Post New Analytical Chemistry Questions
If inhouse hplc related substance method is completly diffrent from Usp for finished proďuct with diffrent impurities then how require to prove method equivalecy?
what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.
how you establish the LOQ?
How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain
IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?
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?
If vendor having more imp than monograph then how to proceed? and how to set spec?
How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample
which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc
how we can identify the impurity is coming below loq at transfering site?
for inorganic molecules require to do RS, Assay and disso?
What is the requirement for brazil in the analytical method vslidation comparr to ich?
What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.
acceptance criteria for lod & loq by standard deviation of response and slope??
what type of question will ask in the interview of lab chemist.
