1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer330
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 regards279
What is difference between known and unknown impurities233
What is the difference between known and unknown impurities?1 508
Why to use propyl paraben in HPLC gradient calibration967
Why potassium dichromate was using in Uv calibration?1 724
%lod always grater than %water content for same product??1 473
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 accuracy298
How to define samples weight in moisture content1 304
How to determine water content of bis tetrazole amine mono ammonium salt
USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...
What is Band broading effect explain
AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?
1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer
What is the purpose of octyl silane columns?
Why dissolution test is not performed in all of the products
A ha tc is actual defination of retention time?
what type of question will ask in the interview of lab chemist.
WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE
Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?
can i use hplc detector to uplc and why?
WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?
mahagenco syllabus for the post of chemist
cefoperozone and sulbactam inj. hplc test method