EPA Method 525 Internals & Surrogates Back Catalog number: 91161 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended L20950001CY PAH-Mix 1, in Cyclohexane, 10ml Price on request X23227200CY Chloroparaffin C22 72.1%Cl, 100µg/ml in CY, 10ml Price on request MBP-178 2,2',3,3',5,5',6-Heptachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane Price on request