Answer Posted / john

To maintain  ph level

How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?

1827

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What is the acceptance criteria for moisture balance when calibrated with sodium sulfate

2089

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Explain the relations between number of carbon atoms in alkanes and retention time ?

2205

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What is dose dumping? why require to do?

1041

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Why dissolution test is not performed in all of the products

2578

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USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

2069

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In HPLC (Waters) software Empower1,2 &3 what is the updation for each version

3084

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What is delay volume?

1432

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how to qualify the impurity?

942

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We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?

1784

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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?

3578

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why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

2359

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

830

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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.

2754

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what are risk assement in the analytical qbd?

805

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