GTM-NFFL6X

CS2

carbon disulphide (solvent used to extract VOCs from charcoal or OVM PSDs)

HiVol

high volume air sampling device (typically 40 scfm)

PM10/PM2.5

airborne particulate matter less than 10 or 2.5 micrometers in aerodynamic diameter, respectively

ZG-zero grade

zero grade (nitrogen or air) used as a carrier or FID supply gas in gas chromatography or in other chemical procedures.

VOAG

vibrating orifice aerosol generator, a device used to generate airborne salt or dioctylthalate particles of micron size

WDG

Wright Dust Feed Generator, a device used to generated airborne particulate matter