Potassium (K) Back Catalog number: 54158 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 54199 Total Settleable Solids Price on request 21002 EPA Method 8260 - Surrogate Standard Price on request 11666.12-100-IO 2,5-Dichlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request