Answer Posted / natraj kumar

ALL API's ARE SOLUBLE IN METHANOL,LOWEST COST AND WATER
CONTENT IS ALSO LESS.

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

1599

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1780

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how much mass should be there in volumetric flask while in preparation of sample for assay? 

2582

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1621

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1910

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1168

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1671

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882

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3181

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760

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