Multi-Element Calibration Standard-4 Back Catalog number: 50013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675304 Terbuthylazine-desethyl, 100 µg/ml, Acetonitrile, Price on request 73061 Fentanyl-D5 Price on request 680340 2-Methylnaphthalene, 10 µg/ml, Cyclohexane, 10ml Price on request