for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol1 3331
we run the same sample in same method in different flow rates in HPLC,any changes in sample analysis?2 4441
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?2153
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?765
if the flow rate is increases then any changes in retention time in hplc1 5025
what is the limit of Correlation for IR test compare to the standard and test3 5250
IS THERE ANYWHERE MENTION THAT THE RE PROCESS BATCH REQUIRE TO KEPT STABILITY STYDY2 3420
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 3342
how to correct peak when peak comes broader in shape? How to do calibration of HPLC?2 4909
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 extinction coefficient for Indomethacin or at 319nm wave length.
What is the difference between spectro meter and spectro photo meter?
how much mass should be there in volumetric flask while in preparation of sample for assay?
Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?
how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,
what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?
why disodium tartarate used in karl-fischer instrument ?.
Explain the relations between number of carbon atoms in alkanes and retention time ?
What is the main difference between ODS1 and ODS2 Hplc column.
Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?
In dissolution test s1 stage we are getting one bowl 40 % out of 6 bowls what is the root cause you find and how proceed next step? ( Q is 80%)
Why a1% value is used for some product ? What is the criteria for selection a1% value ?
What is diffrence between extractable volume and deliverable volume? Answer pls