Multi-Element Internal Standard Back Catalog number: 59502 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MDF-123489 1,2,3,4,8,9-Hexachloro(13C12)dibenzofuran, 1.2mL x 50ug/mL, toluene Price on request 679870 Tri-m-cresyl phosphate, 100 µg/ml, Methanol, 5ml Price on request 678247 Butachlor, 100 µg/ml, Methanol, 1ml Price on request