Elimination of Excess Water for Method 1664A/B by Automated Solid Phase Extraction Utilizing the SPE-DEX® 1000/3000XL Controller v2.2

This application note introduces a modification to the preprogrammed methods on the Horizon Technology SPE-DEX 1000/3000XL Controller with application firmware version 2.2. The methods are utilized in the solid phase extraction (SPE) process to extract samples for EPA Method 1664AB and fulfill QC requirements. EPA Method 1664 is a performance based method which is used to find the total n-Hexanes extractable material (HEM) and the silica-gel treated n-Hexanes extractable material (SGT-HEM) within a sample.