ASTM D-4815 Calibration Mix #2A Back Catalog number: 51214 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54124 Total Residual Free Chlorine (Cl) Price on request 8880.12-100-IO 2,4-Dichlorobiphenyl, 100µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 33284-50-3 Price on request CS3WT EPA-1613CS3 + Window Defining/2378-TCDD Resolution Mix, 500ul, nonane Price on request