EPA Method 525 Internals & Surrogates Back Catalog number: 91161 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71657 2-Methyl-4,6-dinitroanisole Price on request B316510 Benzyl Vinylcarbamate, 100mg Price on request 678405 Etridiazole, 100 µg/ml, Acetonitrile, 5ml Price on request