ECH Standard Back Catalog number: 92141 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50478 Selenium (Se) Price on request 2221.21-K-IO 1,3,6-Trimethylchrysene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 676009 Methomyl oxime, 100mg Price on request