Answer Posted / nitin

KBr is akyl halide.......KBR esaily affected moisture in present sample.

why xterra column require to use at higher ph?

920

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What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio

1900

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if peak get problamatic then what require to do?

805

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in OSD forms require to use gas chromatography?

834

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what is diffrence between specificity and selecivity?

780

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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?

3540

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

3486

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how you establish the LOQ?

795

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In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?

1973

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How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain

2389

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Please give idea about method development for cleaning method and how maco level establish

748

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What is viod volume and peak purity in HPLC?

2884

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How require to perform linearity as per ANVISA? What are the acceptance criteria?

1336

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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?

4073

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Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?

2728

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