Semivolatiles Mega Mix standard for EPA Method 625. Certified reference material (CRM) containing 64 components, 1000ug/mL each, in methylene chloride. Includes phenols, phthalate esters, polyaromatic hydrocarbons, chlorinated pesticides, and other compounds specified in US EPA 625 for analysis of organic compounds in water and soil. 1mL ampule, min shelf life on ship date: 6 months. Storage conditions: 0 C or colder. Replacement for 220-94938-07.