Written by: Ulf Nobbmann. The term polydispersity (or more recently dispersity without the poly, as per IUPAC recommendation) is used to describe the degree of ânon-uniformityâ of a distribution. In the field of molecular/nanoparticular characterization there are in principle two different definitions of polydispersity, depending on the underlying property of interest. In Gel Permeation Chromatography (GPC) and Size Exclusion Chromatography (SEC) we are interested in the molecular weight of the sample.
Eder has been in business for approximately 17 years. The phone number for Eder is (516) 656-0808. Eder is estimated to generate $2 million in annual revenues, and employs approximately 6 people at this location. The website (URL) for Eder is www.eders.com. David Eder is the President at Eder.
Best Answer: Their email address is customerservice@ea.com. But believe me they will do sod all in a hurry if you email them. Your best bet is to phone them on 08702432435 (assuming you're in the UK) I've added a link to this answer which will list various contact methods for each country.