CHROMABOND® PTS and CHROMABOND® PTL columns are designed for the separation of a two-phase mixture without a separation funnel.

• The special membrane stops the flow when the lower phase has passed
• The upper phase remains in the column, thus both phases are available for further analysis
• Columns must not be run with vacuum or pressure

PTS for solvents heavier than water, like trichloromethane and dichloromethane. PTL for solvents lighter than water, like diethyl ether and hexane.