what is the defferance between the potency and working standard1 3097
what is the principle involved in determination of moisture content?3 7103
what is difference between assay&purity&potency?5 23689
why we do the calibration of limit of stry light in hplc & uv1343
From peak purity spectrum, where or at which point peak purity angle & purity threshold is checked?1 1527
what is concentration of oxygen in U.H.P. grade N2 cylinder1 2897
water is more polar than acetonitrile.but in reverse phase chromatography peaks elute earlier when we increse Acetonitrile.what is the reason.10 34730
I got 88.0 % assay for a drug in HPLC analysis for same injection i got 40.0% related substances is it possible? what is the relation between results of assay and purity?5 7052
hi i am m.sc organic chem and complete analytical lab tech dipolma now job in qc many time ask question you in m.sc organic why job in qc please help me i can not give proper ans please tell me3 7097
why use benzophenone & caffene acetone in hplc calibration1 12085
IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?
A ha tc is actual defination of retention time?
how to calculate corelation coefficient in G.C Calibration? what is the calculation part?
how you determine moist.of NaOH sol or NaOH flacks
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
how to get accurate result for Residue on evaporation in purified water
Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?
Why Ethanol is Used for Standardization of GC Head space?
Why potassium dichromate was using in Uv calibration?
How to determine water content of bis tetrazole amine mono ammonium salt
WHAT IS DIFFERENCE B/W MALTINGRANG/DSC
why are measure gas flow " ml " in Gas chromatography
why we are using hexane in calibration of number of drop per mL
Why potassium dichromate is used in calibration of uv?
Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?