EPA Method 508A DCB Stock Solution Back Catalog number: 30020 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-LCS-A40 Mass-Labelled PCDD/PCDF Solution/Mixture , 1.2ml , nonane Price on request C17900700 Vardenafil hydrochloride trihydrate, certified, 0.1g Price on request 0979.21-100-IOX10 d4 Pregnane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 205529-77-7 Price on request