EPA Method 537 Analyte Primary Dilution Standard (linear isomers only), 1.2ml, methanol Back Catalog number: EPA-537PDSL-R1 Availability: In the manufacturer's stock Price on request - + Recommended 677620 Chlorthiamid, 10.0 µg/ml, Ethyl acetate, 10ml Price on request 684871 Cinnamaldehyde, 250mg Price on request 54132 Total Kjeldahl Nitrogen as N Price on request