Retene, 500µg/mL in Isooctane, 1ml Back Catalog number: 0794.18-500-IO Manufacturer: CHIRON AS Availability: 3 weeks Price on request - + Recommended 52120 EPA Method 353.2 Nitrate & Nitrite Price on request 92270 Citric acid [3% wt] Price on request 2125.12-100-IO Arochlor 1221 , 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 11104-28-2 Price on request