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 70339 1-(o-Chlorophenyl)-2-thiourea Price on request 96436 SDWA Carbon disulfide, MIBK, Naphthalene Cal 4 Price on request 680412 N-Nitroso-pendimethalin, 10mg Price on request