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 DF-ST-A Native PCDD/PCDF Solution/Mixture, 1.2ml, nonane Price on request 55021 WS Turbidity Price on request 71193 2,5-Dinitrophenol Price on request