PSA-GCB-Mix for 2007.01 per AOAC Back Catalog number: 674523 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 59579 Conductance @ 20°C [10 µmho/cm] Price on request 1635.20-200-T 1-/3-Nitrobenzo[a]pyrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 70021-99-7/70021-98-6 Price on request 50683 Nitrite Single as (NO2-) Price on request