VPH Primary Calibration Rev 1.1 Back Catalog number: 51167 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended EPA-537SS-R1 EPA Method 537 Surrogate Primary Dilution Standard (SUR PDS), 1.2ml, methanol Price on request 11743.12-100-IO 2,2',3,4,6,6'-Hexachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 56278 Platinum (Pt) Price on request