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From where 16 or 5.545 is derived in theoretical plates calculation formula by USP or JP/BP/DAB and what is meaning of this coefficient and impact in calculation ?
2 12717can 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?
2143Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?
2147What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?
8824What is the difference between Spectroscopy and spectrophotometry,What are the applications?
4 11750Post New Analytical Chemistry Questions
How to calculate coreletion coefficient
What is the requirement for brazil in the analytical method vslidation comparr to ich?
Why Ethanol is Used for Standardization of GC Head space?
what is mean by covalidation
What is control room temperature and which guide line says?
in sampling of raw material which side is pasted sampled labels
how you fix the limits of impurities?
what is the disso medium for tropsiun chloride
We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy
what is mean by extactable and leachable study?
how decide the clining method and cleaning method validation require for this perticular products?
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 they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?
How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.
why octanol used to determine the partition coefficient ?
