Answer Posted / ranjit

it is depends upon polarity of the colunm

Why potassium dichromate is used in calibration of uv?

1979

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In the isomers,enantiomers give the only physical properties present such that no chemical properties present.

2214

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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

1587

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if tech transfer fails whay require to do?

832

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if content uniformity passing but dissolution varrying then what is next step?

863

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Why a1% value is used for some product ? What is the criteria for selection a1% value ?

2335

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please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development

1620

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sop of a uv visible spectrophotometer double beam elico model

5905

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What are the primary considerations in extractables and Leachables ?

2268

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Why dissolution test is not performed in all of the products

2529

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why we use a particular hplc column for a particular compound give reasons?please

2744

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IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

2446

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For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

2305

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in DMF having extra impurities and in api COA also having extra imp than USP or BP product then how require to proceed?

822

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what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?

886

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