for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol1 3496
we run the same sample in same method in different flow rates in HPLC,any changes in sample analysis?2 4642
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?2274
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?827
if the flow rate is increases then any changes in retention time in hplc1 5267
what is the limit of Correlation for IR test compare to the standard and test3 5537
IS THERE ANYWHERE MENTION THAT THE RE PROCESS BATCH REQUIRE TO KEPT STABILITY STYDY2 3584
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 3537
how to correct peak when peak comes broader in shape? How to do calibration of HPLC?2 5197
What is diffrence between extractable volume and deliverable volume? Answer pls
what type of questions asked on analytical balance and also give answers................all pharma companies?
can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?
what is the origin to prepare standard operating procedure
what is third integration
some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?
As per ICH related substances stability trend limit from initial to shelf life
why equlirium conatant of water have 14 value
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?
what is the structure of DOWEX-50
why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?
calibrtion procedue of LC-MS
What is control room temperature and which guide line says?
In the isomers,enantiomers give the only physical properties present such that no chemical properties present.
How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain