Method 1666 Standard Back Catalog number: 97659 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2518.7-K-ME Theophylline,1000 µg/mL,MeOH,1mL, Price on request 95649 Alcohol Standard Price on request 91034 Wisconsin DNR DRO n-Hydrocarbon Standard Price on request