Solinst Model 122 Oil/Water Interface Meter - EnviroEquip Asia

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Solinst Model 122 Oil/Water Interface Meter

Solinst Oil/Water Interface Meters give clear and accurate measurements of product level and thickness in wells and tanks. Determination of both light (floating) non-aqueous phase liquids (LNAPL) and dense (sinking) non-aqueous phase liquids (DNAPL) is quick and easy. The factory-sealed probe is pressure proof (up to 500 psi) and tapes are available in a range of lengths from 100 - 1000 ft (30 - 300 m). The 5/8" (16 mm) diameter probe allows easy access through tight spaces and into narrow wells. The probe is designed for use in various monitoring applications.

There are two versions to choose from

  • The Model 122 Standard Oil/Water Interface Meter.

  • The Model 122M Mini Interface Meter that is a convenient small version of the Solinst Interface Meter. It is small enough to fit in a backpack.

Hazardous Locations Use
Model 122 Interface Meters have been approved for use in explosive environments. They are suitable for use in hazardous locations Class I, Div 1, Groups C&D based on standards of the Canadian Standards Association (CSA). The Model 122 Interface Meter with laser marked PVDF tape is now ATEX certified under directive 94/9/EC, as II 3 G Ex ic IIB T4 Gc. The grounding strap is a safety essential when the meter is used in potentially explosive environments. It also ensures that the electronics are properly protected.


  • Measuring the depth to water in wells, boreholes, standpipes, and tanks.

  • Determination of both light (floating) non-aqueous phase liquids (LNAPL) and dense (sinking) non-aqueous phase liquids (DNAPL) levels.

Key features

  • Sensor accuracy to 1/200 ft. or 1.0 mm.

  • Designed for rugged field use.

  • Stable electronics with automatic circulatory testing.

  • Certified intrinsically safe.

  • 5/8" (16 mm) diameter probe.

  • Easy access batteries: minimum 120 hours of life.

  • Automatic shut off after 10 minutes.

  • Inexpensive, simple repairs.

  • 3 year warranty.

  • Permanently laser marked every 1/100 ft or each mm.

Tape Markings
  • LM2: Feet and tenths: with markings every 1/100 ft. 
  • LM3: Meters and centimeters: with markings every mm.


  • Model 122 or 122M options.

  • Different tape length is available.

  • Carry bags.

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