Procurement of Primary Reference Materials: Low Density Polyethylene. Annual Report September 30, 1982-September 29, 1983

摘要

Program objective is preparation, characterization, storage, periodic quality control, and distribution of chemically pure low density polyethylene (LDPE) in the form of tubes and sheets. During the reporting period, activities were limited to storage, quality assurance, and distribution. Approximately 200 sheets and 50 tubes were supplied to investigators. No undue variability has been detected in physico-chemical properties during storage.