UOP 1021-17

Determination of Trace Methyl and Ethyl Mercaptan in Polymer Grade Ethylene & Propylene by Gas Chromatography Mass Spectrometry
standard by UOP LLC, A Honeywell Company, 10/01/2017

UOP 964-11

Surface Area, Pore Volume, Average Pore Diameter, and Pore Size Distribution of Porous Materials by Nitrogen Adsorption
standard by UOP LLC, A Honeywell Company, 01/01/2011