What is the reason of RT change in new column v/s old column in HPLC

Answer Posted / naresh

Regular usage of old column some stationary phase is loss inside the column compared to new column so compound retention inside the column varies between these two columns

Is This Answer Correct ?    7 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

why we are using hexane in calibration of number of drop per mL

1168


Why to use propyl paraben in HPLC gradient calibration

6076


What are the primary considerations in extractables and Leachables ?

1782


Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

1458


how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

1833






How to set analytical specification for combination products?

324


Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.

2387


in dissolution if one bowl got 70 percent 2nd bowl got 80 percent and 3rd bowl got 90 percent then how proceed?

331


process of Diclofenac sodium,IP.

1672


In which situation we require to analytical method validation of excipient?

290


How do we fix the sample concentaryion in hplc method development. What is the basis?

678


function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

2059


if you given one product then which tests you will perform?

317


WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?

2139


CAN WE DETERMINE THE PEAK PURITY IN GAS CHROMATOGRAPHY ANALYSIS?

703