Ana Coelho

3 Questions 2 Answers 0 Followers

Questions related from Ana Coelho

How can sample temperature affect retention time on HPLC?

I usually run an analysis on Thermo Ultimate 3000 HPLC, using the sample temperature of 15 °C. The retention time of the peaks due to epinephrine and dopamine are, respectively, 3 min and 6 min....

10 October 2019 6,636 4 View

Why does rinse shows better recovery than swab?

In cleaning validation, the rinse method always shows better recovery results than swabbing. I would like to know why does this happen. Does any one have a paper about that?

08 August 2018 1,745 2 View

Which ion pair reagents are compatible with LC-MS?

I want to perform ion pair chromatography, in LC-MS. Thus, I want to know which ion pair reagents I could use.

07 July 2018 5,586 23 View