Spiking Standards Kit Back Catalog number: 52073 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0312.21-200-T Dibenz[a,c]acridine, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 215-62-3 Price on request 72281 L-Tryptophan Price on request 31005 EPA Method 502/524 Fortification Solution Price on request