Pre-weighed extraction sorbents for fast, simple sample prep for multiresidue pesticide analysis in a variety of sample matrices. Includes 50mL conical bottom centrifuge tubes - no glassware required. Supports AOAC (2007.01) method. Contains 6g MgSO4, and 1.5g NaOAc in each slim, easy-open packet which fits perfectly into 50mL centrifuge tubes to prevent spills. Replacement for REST-26237.