Answer Posted / tushar

Tapdensity means after tapping what volume we get.

Tapdensity = weight/after tapping volume which we get.
Tapdensity is greater than untapdensity.

how much mass should be there in volumetric flask while in preparation of sample for assay? 

2576

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Hi sir if any product monograph not given known impurities (may be 5 impurities) specifications then how we require to proceed for inhouse formulation?

704

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mahagenco syllabus for the post of chemist

6476

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

2168

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What is the principle of Thermal conductivity detector and FID?

2726

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How we choose the mobile phase for method development.?

1207

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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?

3539

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In rs method development when we are going area normalization method to dilute standard method?

1520

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

875

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

4571

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in monograph 7 imp are there but in vendor showing 5 imp do not req to include 2 imp for that what will be justification?

719

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

2221

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for inorganic molecules require to do RS, Assay and disso?

731

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

2666

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How to calculate coreletion coefficient

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