Answer Posted / neelam tyagi

it shows maxima at the multi wavelength of 205 nm and 273
nm shows and shows minima at the wavelength of 245
nm. It is a Primary reference standard andvery easily
avaliable
in the market .It is cheap.It is non-degradable
and we can used it for longer period of analysis it is very
highly stable

In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?

3175

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CAN WE DETERMINE THE PEAK PURITY IN GAS CHROMATOGRAPHY ANALYSIS?

1206

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How to fix the sample conc. in Related substances test by HPLC?

1095

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How to decide assay range for non pharmacopeial API analysis by HPLC? Could you give me any reference for same e.g Guidelines or Paper publications?

3353

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in sampling of raw material which side is pasted sampled labels

1832

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why octanol used to determine the partition coefficient ?

2456

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in dissolution why pool sample needed? in which type of drug pool sample need?

3178

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Why we use potassium dichromate in uv calibration Exact reason behind it??

1255

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[3/28, 20:52] Manoj P Venkatpurwar: how many impurities require to inject in assay specificity that how we can find out? and in Rs also how?

795

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how the compound separate in coulunm,explain

2531

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Principle of single pan analytical balance

5140

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if peak get problamatic then what require to do?

799

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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?

3538

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what is biorelivent dissolution media?

807

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how you fix the limits of impurities?

837

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