Gretchen Lescord

3 Questions 2 Answers 0 Followers

Questions related from Gretchen Lescord

Can anyone provide feedback on PerkinElmer's SMS 100 mercury analyzer? How does it compare to the Milestone-80 or other Hg analyzers?

Specifically, has anyone had issue with the life span of catalyst tubes or the reproducibility of data? Are there any long-term solutions or troubleshooting options for these issues? Additionally,...

19 April 2017 4,799 3 View

Which bottle type is the best to use when collecting water samples for mercury analysis? Glass, polyethylene, or teflon?

Different groups favor different methods; I would greatly appreciate more input on the debate. Assume all bottle types are cleaned thoroughly and samples are being analyzed in the lab for...

27 June 2014 7,933 22 View

What is the best way to scale parameters before running a Principal Component Analysis (PCA)?

I am working on lake water chemistry parameters and am using the resulting factors in a multiple regression. Is there a difference between standardizing (to a mean of 0 and a SD of 1) and...

05 August 2013 4,887 42 View