Multi-Element Internal Standard / Back Catalog number: 53319 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended X9219 Diethyl ether Price on request 9245.8-100-ME Acetaminophen-d4 (Paracetamol-d4),100 µg/mL,MeOH,1mL Price on request XA16950200AL Simazine D5, 100µg/mL in Acetonitrile, 1ml Price on request