WS Paraquat & Diquat Back Catalog number: 38131 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 52064 Spiking Standard 1 Price on request 2128.12-100-IO Arochlor 1254, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 11097-69-1 Price on request 93244 EPA Method 526 Analytes Price on request