what is classification of elemental impurities? what is risk assement in elemental impurities?

330

why salisylic acid not using now days for disdolution calibration?

293

acceptance criteria for lod & loq by standard deviation of response and slope??

2082

In performance Check of GC Why Hexadecane Peak is Considered 

2549

Why perchloric acid used for potentiometric titration

2152

In Dissolution Test why limit is define Q+5% what is the role of +5%.

2565

if peak get problamatic then what require to do?

309

What is Band broading effect explain

1388

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.

1753

In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.

2595

using gradient pressure in gas chromatography are not ?using gradient pressure why

2932

If vendor having more imp than monograph then how to proceed? and how to set spec?

330

How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?

1294

cefoperozone and sulbactam inj. hplc test method

2117

Why we check moisture,ash & AIA in product

1393