Answer Posted / ravindra gore

Sucrose is easily oxidized and 1,4 Benzoquinone is not easily oxidized

Many times I don't got a caffeine peak in calibration of hplc using guard column ❓

1801

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Why use only methanol,used determinationof moisture content not use other solvents

1396

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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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What is diffrence between extractable volume and deliverable volume? Answer pls

4554

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is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

2165

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if peak get problamatic then what require to do?

792

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what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

2624

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sop of a uv visible spectrophotometer double beam elico model

5904

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While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

2852

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in which situation require to use paddle and basket?

729

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pharma industries oriented

2227

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what is diffrence between specificity and selecivity?

758

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How we can identify process related and degradation impurity in single method with short period?

806

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In the HPLC Calibration done wavelength accuracy done between 200nm-280nm .but not done remaining 300-400nm not done ?

912

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I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?

3532

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