Potassium (K) Back Catalog number: 58019 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended M0220 4,4'-Diaminodiphenylmethane, >98%, 25g Price on request 83562 2,4-D Price on request DF-12478-S 1,2,4,7,8-Pentachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request