Chlorbufam, 100 µg/ml, Acetonitrile, 5ml

Napropamide, 100 µg/ml, Acetonitrile, 5ml

Low level Nitrogen Calibration Units: 1x1mL ampoules or 10mL screwcapped bottle Nitrogen introduced using Aniline Catalogue No. Concentration Matrix: isooctane mg/kg (ppm) S-4142-0 Blank S-4142-05 0.5 S-4142-1

ISO 9377-2MOD Extraction solvent standard solution Dilute of "extraction solvent stock solution" (S-4415) 10 times with the extracting solvent (n-pentane) 1,5,10x50mL Use 50mL of extraction solvent standard solution pr. experiment