which effect is mainly responsible for chromatographic separation when silica is the statinary phase at TLC? thanks in advance1 1383
what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?551
why in GC calibration of linearity regression coefficient should not be less than 0.9991 2912
Why we are having specification 100% above in case of assay as there is only 100% of compound?2 2727
why we are taking 89ml concentrated HCL for preparing 1N HCL3 4767
Calculate the water content in Di Sodium Tartrate (DST) based on molecular weight?2 2343
What are the terms used during Melting Range Analysis ?2 1464
which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc816
In which cases factor of KF Reaget got higher side2 3196
what is the concept for adjustment of pH in HPLC buffer solution ? a. Common ion effect b. Counter ion effect and explain me, how we adapt this principles & what is the role of these principles in our method957
what is turbidimetric titration?Give 2 examples.
calibrtion procedue of LC-MS
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?
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 ?
Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?
what is the origin to prepare standard operating procedure
what is DIPE limit in residual solvent?
why we use sodium salicylate in uv light calibration at TLC chamber
mode of absorption in alimentary canal?
WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE
For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?
explain 5 components of gas chromatography ?
Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6
how will you do the prep for unstable componds?
why we are using benzene, anyline in acetic anhdride assay titration method?