Method 504.1LFB Mix Back Catalog number: 94019 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674959 Profenofos, 100 µg/ml, Cyclohexane, 5ml Price on request 40021 EPA Method 624Mix #1 - Purgeables Price on request 97876 Dimethyl phthalate Price on request