GB/T 21864-2008 Active National standards

GB/T 21864-2008 Standard test method for molecular weight averages and molecular weight distribution of polystyrene—High performance size-exclusion chromatography

Publish Date: 2008-05-12 Implement Date: 2008-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 21864-2008

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Logo, packaging, transportation, storage

ICS Name: \nProtection against dangerous goods

Publish Date: 2008-05-12

Implement Date: 2008-09-01

Pages: 21 pages

Scope

1.1 This standard specifies a method for determining the average molecular weight (Mw) and molecular weight distribution of linear soluble polystyrene using high-performance size-exclusion chromatography (HPSEC). This method is not an absolute method and requires the use of commercially available polystyrene standards with narrow molecular weight distribution for calibration. This standard is applicable to the elution volume containing molecular weight components and the determination of samples within the range determined by the polystyrene standard (molecular weight generally ranging from 2,000 g·mol-1 to 2,000,000 g·mol-1).