Pre-weighed extraction sorbents for fast, simple sample prep for multiresidue pesticide analysis in a variety of sample matrices. Supports AOAC (2007.01) method. Contains 6 g MgSO4, 1.5 g NaOAc in each slim, easy-open packet which fits perfectly into 50mL centrifuge tubes to prevent spills. Use 50 mL centrifuge tubes REST-25846 (50/pk) or EPPE-0030122179 for sample extraction. Replacement for REST-26238.