Multi-Element Internal Standard Back Catalog number: 59502 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 30074 EPA Method 515.2Methyl Derivatives Price on request 73458 1,2-Dihydronaphthalene Price on request 11714.12-100-IO 2,2',3,5,5'-Pentachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request