Jose Herrera

4 Questions 4 Answers 0 Followers

Questions related from Jose Herrera

Are there different types of Dansyl Chloride?

I was using Sigma Aldrich Dansyl Chloride (03641) suitable for HPLC derivatization on a method for quantification of hormones, but then I changed it for product (39220) for fluorescence and now I...

25 June 2019 1,606 3 View

Loss of internal standard in a LC ESI MS/MS protocol for Gliclazide?

We are performing an LC ESI MS/MS protocol to quantify Gliclazide on plasma samples. We have noticed that the internal standard (Gliclazide D4) has a very high variation compared with gliclazide....

23 July 2018 9,031 4 View

We purchased new amber led lights for the lab. Is there a quick easy way to check if they are not causing any photo degradation?

I a looking for a witness or compound that is degraded by light and easy to check like color change or something like that. Just to know is the new amber lights are not causing photo degradation...

10 January 2018 434 3 View

Running Influenza virus in protein gels any advice on how to get a clean and nice run?

I have influenza virus produced in eggs and then purified by ultracentrifugation on a sucrose gradient after protein determination to know the amount of virus to put in the protein gel I run the...

19 February 2015 2,391 2 View