Potassium (K) Back Catalog number: 58019 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50769 EPA Method 200.8 Price on request 9523.10-K-IO 1,4-Naphthoquinone-d6, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 26473-08-5 Price on request 2973.8-100-IO 2,4,5-Trichlorophenoxy-3,6-d2-acetic-d2 Acid, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 358731-37-0 Price on request