What is difference between Potency & purity3 10023
state the principle of gas chromatography?5 8151
Why noise test is performed at 254 nm in calibration of HPLC system?4 11891
some compound havving uv region but not give much more response during hplc analysis2 4271
I have got selected for Aurobindo Pharma AR&D, HR person is asking me to sign in agreement. can I join?19 27215
Why sulfuric acid is used in sulphated ash / residue on ignition test.8 47709
During Validation study, Recovery is passing at all levels but Linearity is failing. Justify?1345
What is Stray light ? & what is the IMP of this2 6888
If we do accuracy at same concentration at which linearity planned,what is the need to do linearity separately?887
What is the Deference between Bulk density & Tap density ?2 18720
Dear sir, This is R.Kadambavadani working in a pharma industry. while doing RS analysis of ibuprofen API, unknown peak eluting some times in the 0.6 Min RT. Kindly send me what is the exact reason behind that. also am using ACN the mobile phase.
in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result
what is separation techniques.
when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.
why we use sodium salicylate in uv light calibration at TLC chamber
What is the calibration of uv process and preparation
why we do the calibration of limit of stry light in hplc & uv
How you develop a method in HPLC?
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.
how to get accurate result for Residue on evaporation in purified water
Principle of single pan analytical balance
sop of a uv visible spectrophotometer double beam elico model
IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?
I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?