UCMR 524.3 Standard Back Catalog number: 97492 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 98554 Formaldehyde (0.5 ppm) Price on request 0619.30-100-IO Friedelane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 559-73-9 Price on request 79114 2,4’-DDE, 1000µg/ml in Hexane, 1ml Price on request