Metals Mix Back Catalog number: 50748 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended A15935000WL-100 Penicillin G potassium, 100µg/mL in Acetonitrile, 1ml Price on request 681525 Fenvalerate, 100 µg/ml, Acetonitrile, 5ml Price on request 72241 L-Proline Price on request