Answer Posted / ulka patil

uracil is also used.

Why sodium hydroxide used for maintain pH of phosphate buffer

2411

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How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample

3236

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what is mean by dissolution hydrodynamics?

826

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What is the diffrence in japan mkt requirement in analytical method validation over US?

719

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WHY pKa value is more important than pH value of the mobile phase in HPLC?

1768

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can i use hplc detector to uplc and why?

2288

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How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?

3216

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what is the principle of UV Vis spectroscopy, AAS, ICP OES,ICPAES, ICP-MS and FTIR

9246

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If vendor having more imp than monograph then how to proceed? and how to set spec?

925

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How to determine water content of bis tetrazole amine mono ammonium salt

3484

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how to develop the icp ms method? Application of icp ms?

808

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in which situation ion pair agent require to use?

733

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Principle of single pan analytical balance

5140

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if you given one product then which tests you will perform?

704

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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

1596

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