Multi-Element Internal Standard / Back Catalog number: 53319 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674800 D4-Sulfamethoxazole, 10mg Price on request 10152.7-200-ME o-Anisidine Price on request 688151 D5-6PPD-quinone, 100µg/ml in Acetonitrile, 1ml Price on request