Trifluoroacetic acid, 1ml

Nitrogen Set for ASTM D6366: N @ 10, 25, 50, 75, 100 ng/μL in Isooctane, set(2)

Conductance @ 20°C [2 µmho/cm]

Custom BTEX mixture, variation of S-4218 6 components, each concentration as described below in methanol 1300.6 Benzene, 3000µg/mL 1264.7 Toluene, 3000µg/mL 1268.8 Ethylbenzene, 300µg/mL 1265.8 p-Xylene, 300µg/mL 1266.8m-Xylene, 300µg/mL 1267.8 o-X