PSA-C18-Mix 12 Back Catalog number: 675158 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 11760.12-100-IO 2,2',3,3',5,6,6'-Heptachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 675088 Trifluralin, 100 µg/ml, Acetonitrile, 5ml Price on request 50126 pH 2.0 Standard @ 25°C Price on request