for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol1 3599
we run the same sample in same method in different flow rates in HPLC,any changes in sample analysis?2 4800
For 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?2451
For 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?878
if the flow rate is increases then any changes in retention time in hplc1 5414
what is the limit of Correlation for IR test compare to the standard and test3 5789
IS THERE ANYWHERE MENTION THAT THE RE PROCESS BATCH REQUIRE TO KEPT STABILITY STYDY2 3697
stability 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 3668
how to correct peak when peak comes broader in shape? How to do calibration of HPLC?2 5354
what is partion and column chromatography
What is method validation in quality control
Explain the relations between number of carbon atoms in alkanes and retention time ?
What is Band broading effect explain
How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain
Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?
what is the purge flow & how to calculate
How to determine water content of bis tetrazole amine mono ammonium salt
why we should take dst factor for below 1%moisture samples
How to start the dissolution development for unknown tab?
how can give the expiry period and restadardisation of volumetric solution
why we use a particular hplc column for a particular compound give reasons?please
function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?
can i use hplc detector to uplc and why?
what is the limit for KF Factor ,we take factor using water we will found factor between 6 to 7 ,while on KF Reagent bottle mentioned 5 mg/ml water content.if we not use dried methanol it is effect on factor.