Answer Posted / rajat

the unit is microvolt*second

Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?

2785

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what is mean by ambient temperature?

976

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EXPLAIN THE CALCULATION PART OF AN KF TITRATOR CALIBRATION WITH SUITABLE EXAMPLE

2685

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In the HPLC Calibration done wavelength accuracy done between 200nm-280nm .but not done remaining 300-400nm not done ?

975

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Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

2890

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in DMF having extra impurities and in api COA also having extra imp than USP or BP product then how require to proceed?

888

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WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE

2186

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why we are using hexane in calibration of number of drop per mL

1793

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What is stray light in uv what are units for stray light

1720

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How can I develope method of dissolution by HPLC OR UV

2456

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If suppose 10 methods of dissolution given in pharmacopoeial for single content product then which method out of 10? or all 10 require to follow?

1041

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How would you decide dissolution medium for NCE compound of class I drug

2313

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

3258

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My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

1653

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which situation gc hs and gc als require to use?

838

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