Potassium (K) Back Catalog number: 54158 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 0886.13-500-IO 2-Methyldibenzothiophene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 20928-02-3 Price on request 11398.12-50-IO 2,2',3,4,4',6,6'-Heptabromodiphenyl ether,50 µg/mL,isooctane,1mL, Price on request 71935 3-Methylcyclohexanone Price on request