Answer Posted / m. balaram naidu

TRI ETHYLAMIINE (AND) ORTHO-PHOSPARIC ACID ARE
USED pH ADJUSTMENT PERPASE

BECOSE
1)GOOD RESOLUTION
2)PEEK SHAPE

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?

3489

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can i use hplc detector to uplc and why?

2239

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what is procedure of actual procedure for registration of drug?

1959

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what is mean by 40 in the dissolution basket mesh size?

719

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From where require to take the RLD sample?

710

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

2481

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how you confirm the assay method?

726

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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?

1724

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How we can identify process related and degradation impurity in single method with short period?

760

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what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

1924

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which are the diffrent batches in the pharmaceuticals?

769

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How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.

2542

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how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

2250

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How do we fix the sample concentaryion in hplc method development?

1087

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what type of question will ask in the interview of lab chemist.

3265

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