Why we are performing wavelength accuracy at lower and higher wavelengths in HPLC calibration3 8151
what is differance between volatile and non volatile compound expalin by exaple2 11580
Why do we use 500ppb sucrose and 500ppb 1,4 benzoquinone in TOC calibration?1 1391
In the test for control of absorbance in UV calibration why do we use only potassium dichromate and what is purpose of taking a specified amount of 57.0-63.0mg?8 43577
In the test for control of absorbance in UV calibration why do we use only potassium dichromate and what is purpose of taking a specified amount of 57.0-63.0mg?1 6588
Why do we use 500ppb sucrose and 500ppb 1,4 benzoquinone in TOC calibration?5 13567
what is the use of performing tapped density in pharmaceutical industry1 7314
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.
Which is the highly polar and highly non polar column in HPLC?
what is separation techniques.
what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?
In the isomers,enantiomers give the only physical properties present such that no chemical properties present.
what is procedure of actual procedure for registration of drug?
mahagenco syllabus for the post of chemist
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?
In HPLC (Waters) software Empower1,2 &3 what is the updation for each version
Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?
what is definition of validation? which components are followed give detail?
Why sometime potassium ortho phosphate mix with acetone use for sample preparation for hplc
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.
In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.
How can we determine Moisture content of HI?