UOP 899-97

Trace Hydrocarbons in Hydrogen or LPG by Gas Chromatography
standard by UOP LLC, A Honeywell Company, 01/01/1997

UOP 899-04

Trace Hydrocarbons in Hydrogen, Hydrocarbon Gases or LPG by GC
standard by UOP LLC, A Honeywell Company, 01/01/2004

UOP 856-85

Particle Size Distribution of Powders by Laser Light Scattering
standard by UOP LLC, A Honeywell Company, 07/29/2002