Answer Posted / archana
OOS(out of specification) means the result that fails to comply with given specification during analysis
Deviation means any planned or unplanned departure from GMP
e.g Wrong quantity of raw material is added,wrong sequences of addition of ingradents in manufacturing process,wrong process time is followed etc
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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
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