Answer Posted / babasaheb gilbile

RRF calculation required same cons for impurity and main compounds solution. with help of HPLC this solution measured area response for Impurity and Main peak.
Then calculated RRF= Area response of Impurity/ Area response of Main peak

Basic principle of ESI?

2096

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

2117

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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

1546

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As per ICH related substances stability trend limit from initial to shelf life

3185

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how you confirm the assay method?

723

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how to get accurate result for Residue on evaporation in purified water

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2212

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Tell me about analytical method validation in QC

6125

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What is the calibration of uv process and preparation

1937

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What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

2603

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mahagenco syllabus for the post of chemist

6426

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Which parameter require to do for analytical method equivalency?

729

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what are the guidelines for analytical method validations?

1050

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what is mean by extactable and leachable study?

1098

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when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

1985

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