ASTM D-3230-89 Back Catalog number: 50223 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 30094 EPA Method 551Mix “A” Price on request 79552 Mestranol Price on request 1011.4-1G 1,3-Dithiane, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 505-23-7 Price on request