Answer Posted / a b shah

assay means w/w analysis, and purity means how many pure our
substance we check. so if assay failed so we don't tell
purity also fail.

What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

8916

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What are the primary considerations in extractables and Leachables ?

2317

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what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?

2338

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what is the disso medium for tropsiun chloride

2311

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how will you do the prep for unstable componds?

2068

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on the basis of bcs class how to proceed the solubility?

831

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in hplc chromatogram started from left to right and in uv spectrum started from left to right

1015

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How to know the estimated LOQ concentration in ppm

1277

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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

1653

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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.

2756

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What is the Formula for coreletion coefficient in plhplc calibration

1880

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HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.

2309

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what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?

3750

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What is stray light in uv what are units for stray light

1720

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If combination product how require to identify which imp is of which api?

864

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