gc Calibration % RSD failed what is the possible reasons?

Answer Posted / alasyam ramesh

1) Improper stabilisation of column and system.
2) injector septa bleeding
3) partial blockage of detector jet.
4) syring struck due to solvents nature( solvent viscosity).
5) plunger moving and taking improper injection volume.
6) some time may effect room temperature also

Is This Answer Correct ?    5 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Difference between the quantitative analysis and qualitative analysis?

617


for which product require to do content uniformity? what is limit of cu?

304


What is control room temperature and which guide line says?

1152


which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc

1722


why glutent are detected in the rice cereal baby food product even manufacturer claimed that they are using rice and milk only?we have using ELISA to do the test,and rice supposed not containing any glutent,rite?We already repeat the test so many times and it still detected.just wondering where the glutent came from?

2335






Why a1% value is used for some product ? What is the criteria for selection a1% value ?

1861


in dissolution why pool sample needed? in which type of drug pool sample need?

2588


Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.

2387


why are measure gas flow " ml " in Gas chromatography

1150


What is viod volume and peak purity in HPLC?

2330


what are the standard methods for HPLC?

2236


If suppose 10 methods of dissolution given in pharmacopoeial for single content product then which method out of 10? or all 10 require to follow?

524


what type of question will ask in the interview of lab chemist.

2882


In which situation we require to prepare the standard solution from sample in Related substance method?

282


what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

9427