Multi-Element Internal Std., 10ug/ml, 4x25ml Back Catalog number: 52319 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 679076 Methoprene, 100 µg/ml, Acetonitrile, 1ml Price on request 10201.23-100-AC lambda-Cyhalotrin, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 91465-08-6 Price on request 2959.12-100-ME Methyl viologen-d8 dichloride (rings-d8) Price on request