Toxic Substances #1 Back Catalog number: 10114 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 18000-1150-100ME5 Theophylline, 100µg/ml in MeOH, 5ml Price on request 79058 Hexachlorobenzene, 1000µg/ml in Toluene, 1ml Price on request 53330 EPA Method 200.8 - Analytes Price on request