EPA Method 502/524 Fortification Solution

9-Hydroxyrisperidone

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

Hydrindantin (reduced form of ninhydrin), neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 5103-42-4