Potassium (K) Back Catalog number: 57219 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3210.18-K-IO 9-cis,12-cis,15-cis-Octadecatrienoic acid , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 463-40-1 Price on request NIST-1566B Oyster Tissue (Trace elements,methyl mercury), 25g Price on request 50035 Sodium Bromide (Br-) Price on request