ASTM D1319 Calibration Standard Back Catalog number: 51215 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 95402 Aroclor 1221 & Tetrachloro-m-xylene Price on request 12137.16-100-ME Difenoxuron,100 µg/mL,MeOH,1mL, Price on request 675970 Heptadecafluorooctanesulfonic acid potassium salt, Price on request