The INT Series OIL/WATER INTERFACE METER measures the depth and thickness of floating (LNAPLs), sinking (DNAPLs) hydrocarbons and water in monitoring wells as small as 1/2` I.D. (12.5 mm) using an optical sensor for industry leading accuracy. Interface meters are available with 50-2000 foot tapes with probe sizes not available from any other manufacturer. All probes are pressure proof and leak proof using a unique triple-seal design.

The Testwell Oil/ Water Interface Meters provide unparalleled accuracy when compared to the flat white tapes, where kinks in the tape introduce slight errors, in addition to the displacement of water changing the static level. The Testwell Oil/Water Interface Meter range sets a new standard for probe performance during pump test as well as for well sounding.