EPA Method 531.2 - Analytes Back Catalog number: 34042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3444.6-100-AN Methidathion, 100μg/mL in Acetonitrile, 1ml Price on request 52400 1.0M NaOH Standard Reagent Price on request 56064 Gadolinium (Gd) Price on request