How to establish relative response factor for hplc. Why it is required?

696

Why only 1.2 million lux hours require in photostability study?

456

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

1105

why we use Dichlorobenzene.nitrobezine.t-butyldi sulhate.for calibration of gc Head space

1775

pharma industries oriented

1681

i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

2182

What is the purpose of octyl silane columns?

3781

How require to develop GC method? how to select diluent, GAS, column selection and other chromatographic conditions?

271

why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

1754

what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

1485

What is intact assay method development.....?

1999

what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?

334

in dissolution if one bowl got 70 percent 2nd bowl got 80 percent and 3rd bowl got 90 percent then how proceed?

328

How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium

1978

Please give idea about method development for cleaning method and how maco level establish

267