Hexane Extractable Material (HEM)/Silica Gel Treat
Spex Certiprep Hexane Extractable Material (HEM)/Silica Gel Treated-Hexane Extractable Material (SGT-HEM) Wastewater QC Sample, 5 mL ampule, yields up to 2 L after dilution - SPEX (Additional S&H or Hazmat Fees May Apply)