about analytical chemistry628
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 1718
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 3198
what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means580
In gas chromatographic analysis sometimes we use headspace, why it is required instead of manually injection?1 2282
How to fix the sample concentration in related substances development.2 3590
what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?
How you develop a method in HPLC?
1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.
about method developement in hplc
why we use a particular hplc column for a particular compound give reasons?please
Why potassium dichromate is used in calibration of uv?
Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?
what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me
In partical size by malven,which parameter is generlly change for development of dry and wet method.
are there in uv lamb that is chractrestic for wavelenghth 205 nm ?????
from where i get mortar pastle for glass bottle crush? it's required for testing of it?
What is column in chromatography?
how much mass should be there in volumetric flask while in preparation of sample for assay?
if you have given a blank water how you analyse by general analytical techniques?
WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?