Explain the relations between number of carbon atoms in alkanes and retention time ?501
Difference between hlaf and rlaf558
What is the main difference between ODS1 and ODS2 Hplc column.1294
How to select Sample concentration in RS analysis?example.1 986
If we have a kc is1*10^8 and the .kp 2*10^5 of reaction A------->B C------->D what is the volume of C?470
Why void volume(time in seconds) 1 in hplc system suitability1 2058
In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?
using gradient pressure in gas chromatography are not ?using gradient pressure why
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 ?
What is the principle of Thermal conductivity detector and FID?
In IR spectra, generally a molecule vibrates without apply emr or ir light?
Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.
Why sodium hydroxide used for maintain pH of phosphate buffer
How to estimate potassium?
Why irmoisture balance is used for corrugated box moisture testing
How to check hplc detecter sensitivity?
what is procedure of actual procedure for registration of drug?
Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?
what are the standard methods for HPLC?
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?
what is weight veriation in pharma industry ? plz explain me