Which is the best mobile phase to separate organic acids using C8 column. And how should the samples be prepared for hplc?1 2014
Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?
How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample928
What is third generation HPLC Columns?639
what is third integration660
Why sodium hydroxide used for maintain pH of phosphate buffer860
what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means
Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6
what is the origin to prepare standard operating procedure
what type of questions asked on analytical balance and also give answers................all pharma companies?
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.
Qc interview questions
what is procedure of actual procedure for registration of drug?
what is the identification test of volatile substance? what is volatile compound?
In IR spectra, generally a molecule vibrates without apply emr or ir light?
4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations
Why we check moisture,ash & AIA in product
In Dissolution Test why limit is define Q+5% what is the role of +5%.
In the isomers,enantiomers give the only physical properties present such that no chemical properties present.
how will you do the prep for unstable componds?