WHY pKa value is more important than pH value of the mobile phase in HPLC?

1769

Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?

2184

in gas chromatography what is the difference between gas flow rate and average linear velocity ?

2604

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?

1779

Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?

2709

How to set specification of assay, fisdolution and related substances?

883

How would you decide dissolution medium for NCE compound of class I drug

2258

Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?

2964

If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately

856

why holium oxide prepared in 10% HCLO4 SOLUTION

1462

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

935

mode of absorption in alimentary canal?

2392

why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?

1708

effect of pore size, pore volume, partical size, column length, carbon load on retention time? what is carbon load? what is the use?

927

how pda detector works over uv?

742