• Chemical Phase = Proprietary
• Organic Loading = 12.1%
• Average Pore Size = 60Å
• Surface Area = 500 m²/g
• Pore Volume = 0.77 cm³/g

CLEAN SCREEN® GHB sorbent is used for the extraction of free Gamma-hydoxy butyric acid (GHB). The small polar nature of the molecule and the lack of a UV chromaphore complicate the chromatographic and spectrophotometric analysis of GHB. Chemically, GHB is unstable and readily forms Gamma-butyrolactone when heated in acid conditions. Most analytical methods are based upon the interconversion to the lactone and chemical derivatization to form the TMS derivative. This sorbent isolates and extracts free GHB.