ASTM D 4026 - 06 (Reapproved 2017) Standard Test Method for Rubber LaTeX - Styrene-Butadiene Copolymer - Determination of Residual Styrene

Current edition approved May 1, 2017. Published May 2017. Originally approved in 1981. Last previous edition approved in 2012 as D4026 – 06 (2012). — 6 p.
This test method covers the determination of the residual styrene content of styrene butadiene (SBR) latex. This test method is based upon direct injection of a diluted latex into a gas chromatograph. The amount of residual styrene is calculated using an internal standard technique.
The range of residual styrene covered is approximately 100 to 3000 mg/kg (ppm) with a lower detection limit of approximately 50 mg/kg (ppm).