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what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

10000

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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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if tech transfer fails whay require to do?

842

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Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

1914

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What is the diference between residual solvents and organic volatile matter

2042

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in each media we require to use SLS? how to proceed?

785

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function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

2669

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What is the principle of Thermal conductivity detector and FID?

2726

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How do we fix the sample concentaryion in hplc method development. What is the basis?

1205

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Principle of single pan analytical balance

5140

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What is the difference between purge septum flow and column flow in gas chromatography?

2581

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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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we can use expired sample for validation and analyst qualification?

806

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process of Diclofenac sodium,IP.

2208

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How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?

3860

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