Answer Posted / afzal khan

amount of residual substance not volatilised from the
sample when sample is ignited in presence of sulfuric acid.
So both the test are usually used to determining the
content of inorganic impurities in organic substanance.

can i use hplc detector to uplc and why?

2288

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HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.

2238

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how you establish the LOQ?

788

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How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample

3237

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What is the Formula for coreletion coefficient in plhplc calibration

1825

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what is the disso medium for tropsiun chloride

2258

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Tell me something about Vitamin A test method by HPLC

2676

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2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.

2218

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

2132

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why require to do water content for drug product?

826

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For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

2312

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Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?

1855

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Is it nessesary all multimedia dissolution require descriminatory?

795

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Loss of linearity in tkn analysis, possible reasons?

1315

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how to calculate elemental impurities?

1032

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