Natural Science Forum / Chemistry / Analytical Chemistry / April 2004

does any one know a solvent for ethylene butyl acrylate polymer? We
tried several solvents like HFI and o-cresol but the polymer chips
don't dissolve at all.
Thanks oenp

This has been confusing me for a long time.  I would like to hear from
someone with experience in Internal Standard calibrations.
If I am establishing a new calibration curve, in the first run of
level 1 I replace the response factors. In subsequent runs of level 1

I have been sent a chromatogram produced from a Beckman system running
Beckman Gold software.
I am trying to work out what the units are for the peak area.
Contacting Beckman technical support in the UK and USA has not yielded

does anyone have any good sources that can give methods of testing for
the elements ie hydrogen, etc

My boss has just dropped this liquid-liquid extractor on my desk, and
I am curious as to how exactly it works. I know the theory behind it,
but I am not sure how it works in real life. The sample is in water,
and is being extracted into dichloromethane.

I am looking at this piece of glassware that my boss has droppped on
my desk. And, for the life of me, I can't figure out how it is
supposed to work. I mean, I know the theory, but I just can't figure
out it works in real life. The glassware looks  like this:

FORMULAS AND RECIPES.
What you need for your work...?
Formulas and Recipes for the preparation of chemicals:
Industry