EPA Method 537 Analyte Primary Dilution Standard, 2000ng/ml in MeOH, 1,2ml Back Catalog number: EPA-537PDSL-R1 Availability: In the manufacturer's stock Price on request - + Recommended 679028 15N2-Chloridazon-desphenyl, 100 µg/ml, Acetonitri Price on request 73213 Benzenesulfonamide Price on request 9503.10-100MG Sulfamethoxazole, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 723-46-6 Price on request