Color Back Catalog number: 50820 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 684709 Quinmerac, 10.0 µg/ml, Acetonitrile, 10ml Price on request G836000 Guanin, 25g Price on request DLM-2136-1.2 Benzo(b)fluoranthene (D12,98%), 200µg/mL in Isooctane, 1,2ml Price on request