8270 Base/Neutral Add - Sub-Mix Back Catalog number: 94546 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8707.12-100-IO 2,2',3,4',5,5',6-Heptachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 52663-68-0 Price on request 9747.10-K-ME Ecgonine methyl ester, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request 34005 EPA Method 502/524 Fortification Solution Price on request