about analytical chemistry694
in gas chromatography what is the difference between gas flow rate and average linear velocity ?
class of solvent regarding Residual solvent e.g. Acetone his class1 1905
Through assay by hplc(anhydrous basis) product got 100.8% .How much the potency of that product.Moisture content is 1.7%,Sulfated ash is 0.02%,Total impurities are 0.3%2 3402
what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means645
In gas chromatographic analysis sometimes we use headspace, why it is required instead of manually injection?1 2459
How to fix the sample concentration in related substances development.3 4271
What is method validation in quality control
Explain the relations between number of carbon atoms in alkanes and retention time ?
what is weight veriation in pharma industry ? plz explain me
Why a1% value is used for some product ? What is the criteria for selection a1% value ?
How to define samples weight in moisture content
why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?
How would you decide dissolution medium for NCE compound of class I drug
what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?
HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.
why we do the calibration of limit of stry light in hplc & uv
why equlirium conatant of water have 14 value
some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?
can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?
if you have given a blank water how you analyse by general analytical techniques?
How to start the dissolution development for unknown tab?