How to set analyticl specification for combination products?

695

how pda detector works over uv?

703

What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio

1867

Why we check moisture,ash & AIA in product

1833

if peak get problamatic then what require to do?

758

what is the origin to prepare standard operating procedure

2266

Why Ethanol is Used for Standardization of GC Head space?

4174

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

2554

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

869

what is the purge flow & how to calculate

2581

How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.

2550

How to start the dissolution development for unknown tab?

1635

My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

1561

Why we select scan range from higer wavelength to lower wavelength in uv visible spectroscopy and ftir spectroscopy ? .

875

give clarity of linearity and range in method validation

2394