Laboratory Fortification Standard Back Catalog number: 59172 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11717.12-100-IO 2,2',3,6,6'-Pentachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 59212 Anion Mix #3 Price on request 91740 5-alpha-Androstane Price on request