Multi-Element Internal Standard / Back Catalog number: 53319 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50804 Calion Internal Standard Price on request 674701 Azamethiphos, 250mg Price on request 1609.42-200-T Rubrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 517-51-1 Price on request