Answer Posted / basha

Most of HPLC Analysis Are in range 4-9 pH hence most of the
labs prefer constant buffers . Columns may degrade below
4pH and above pH range hence specific range

How will u perform degradation study in detectors other thann PDA in HPLC Methodology

2549

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some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?

2656

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what is mean by peak intigrity?

954

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From where require to take the RLD sample?

759

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how you confirm the assay method?

772

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why we should take dst factor for below 1%moisture samples

2666

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how to set sample and standard concentration in RS method?

906

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how you start the solubility study?

832

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Basic principle of ESI?

2153

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In IR spectra, generally a molecule vibrates without apply emr or ir light?

1982

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What is the main difference between ODS1 and ODS2 Hplc column.

5220

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how the compound separate in coulunm,explain

2533

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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

1600

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what is definition of validation? which components are followed give detail?

2376

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we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion

1872

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