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.
Phone Contact Numbers. In the digital age, phone numbers are quickly being replaced with online forms and email addresses. We were able to find a few important customer service phone numbers, but not as many as we expected from a huge publication like the New York Times. 1  Customer Service (Home Delivery): 1-800-698-4637.  Customer Service (International Herald): 1-212-556-7194.