8,9-Z-Avermectin B1b, 100 µg/ml, Acetonitrile, 1

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

3-n-Pentylcarbazole, Please inquire, Solvent-, Unit , # of units-, Cas.no.

3,5,6-trichloro-2-pyridinol(4,5,6-13C3, 99%) cp 97%, 100µg/ml in Acetonitrile, 1,2ml