Spectra Scientific | Professional Grade Groundwater Monitoring

Solinst Model 122 Interface Meter

The Solinst Model 122 Oil/Water Interface Meter is a reliable field instrument designed to measure the separation point between hydrocarbons and water in wells, tanks, and remediation sites. Built with a durable 5/8″ (16 mm) probe and chemical-resistant PVDF flat tape, it delivers precise depth and thickness readings to within 1 mm. Using advanced infrared and conductivity sensors, the meter clearly distinguishes non-aqueous liquids (LNAPL/DNAPL) from water, with both light and sound signals for accuracy in the field. Certified intrinsically safe for hazardous locations, the Model 122 is ideal for environmental monitoring, spill response, and compliance testing. Its rugged design, long battery life, and easy-clean tape make it a trusted tool for professionals who need dependable performance in demanding environments.

Product Details

  • Reel & Housing: Sturdy free-standing reel with carrying handle; battery drawer for easy access (9V)
  • Power & Electronics: Single standard 9V battery
  • Tape: Laser‑marked PVDF flat tape, mm or 1/100 ft graduations, traceable to national standards; easy to decontaminate
  • Probe Diameter: 5/8″ (16 mm)

Key Features

  • Intrinsically safe construction for use in explosive environments
  • Long battery life and automatic shut-off for efficient field use
  • Laser-marked PVDF tape: chemical-resistant, easy to clean, non-stretch, traceable to standards

Applications

  • Groundwater Monitoring: Detect and quantify LNAPL (floating) and DNAPL (sinking) liquids within wells
  • Remediation & Site Assessment: Rapid field interface profiling for environmental cleanup and spill evaluations
  • Tank & Vessel Inspection: Accurate layer detection in storage or containment systems
  • Environmental Compliance: Supports regulatory sampling and monitoring for contaminated sites

The Spectra Advantage

Performance
You Can Trust

Performance You Can Trust

Cost Effective

The Spectra Field Pro III offers decades of durability, with early models still running on minimal maintenance.

All-in-One Solution

The Spectra Field Pro combines all essentials into one compact unit, eliminating bulky battery packs for ultimate convenience.

Lifetime Support

We’re with you every step of the way. Spectra's lifetime support ensures you’re never without expert guidance or reliable assistance.

Rugged Build

Our Professional Grade products are built to last, so we hope you’ll only contact us for support or training.

Professional Grade

We Stand behind
our products

At Spectra Scientific we stand behind our products through a system of world class design, manufacturing and customer support. We are not satisfied until you are satisfied.

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What Our Clients Say

5/5 (20+ Reviews)