525 Surrogate Standard Back Catalog number: 95270 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 63121 PCB No. 121, 1000μg/ml in Isooctane, 1ml Price on request 50402 Nitrite as (NO2-) Price on request 674766 Rotenone, 250mg Price on request