What is delay volume?

834

IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

1971

How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?

3378

How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.

3579

why multimedia dissolution require to do?

298

please explain about aluminium hydroxide assay

697

Which parameters require to do in tech transfer?

259

Why to use propyl paraben in HPLC gradient calibration

6056

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

651

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.

1747

what type of questions asked on analytical balance and also give answers................all pharma companies?

11696

how you fix the limits of impurities?

365

[3/30, 13:29] Manoj P Venkatpurwar: How hplc column selection according to structure? How mobile phase buffer selection on molecule structure?

299

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?

2957

Why sometime potassium ortho phosphate mix with acetone use for sample preparation for hplc

974