EPA Method 555 Herbicide Standard Back Catalog number: 83600 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MBP-189 2,3,3',4,4',5,5'-Heptachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane Price on request 9269.22-100-ME Vitamin A-d5 acetate,100 µg/mL,MeOH,1mL Price on request L15020000CY Methidathion, 10µg/mL in Cyclohexane, 10ml Price on request