Answer Posted / analyticalstudent

For limit test of heavy metals in BP, Method C require that the substance is ignited at a temperature not exceeding 800 °C. Why confines such the temperature?

4132

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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?

3579

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

2679

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in hplc chromatogram started from left to right and in uv spectrum started from left to right

1015

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what is the difference between potentiometric titration and karl fischer titration?

3257

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

848

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what is mean by extactable and leachable study?

1224

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Why are use silicon oil mr?

1256

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what is the origin to prepare standard operating procedure

2401

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if tech transfer fails whay require to do?

893

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mahagenco syllabus for the post of chemist

6512

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

2216

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is it nessesary to do solution stability for 7 days?

816

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

3262

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What is similarity factor?

1260

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