GLC Reference standard 674, 100mg Back Catalog number: GLC-674 Availability: In the manufacturer's stock Price on request - + Recommended 50410 Sulfate (SO4-2) Price on request 10685.12-100-IO 2,2',3,4',5-Pentachlorobiphenyl Price on request 50623 EPA Method 300.0 Anions Mix A Price on request