The Solinst Model 122M Mini Interface Meter is a streamlined, high-performance instrument designed to provide accurate interface depth and product thickness readings in narrow wells, piezometers, sounding tubes, and other installations where space is constrained. Leveraging a miniature probe and laser-marked, chemical-resistant, PVDF cable, the Model 122M delivers dependable detection of floating (LNAPL) and sinking (DNAPL) hydrocarbon layers relative to water, making it well-suited for environmental monitoring, remediation tracking, and regulatory data collection in tight access environments.

The P8 Probe included with the Model 122M is engineered to clearly identify water and product layers with high reliability, even in tight diameters and complex borehole geometries. The narrow 5/8" (16 mm) probe is made from durable stainless steel and PTFE, making it resistant to corrosion and chemical degradation. It uses an infrared light and detector system to distinguish between air, water, and hydrocarbons, with an audible tone and LED indicator for clear readings.

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Key Features:

• Optimized for narrow wells and restricted access points where traditional meters are difficult to use
• Laser-marked PVDF cable with permanent millimeter or 1/100 ft markings for precise depth measurement and traceability
• Miniature P8 Interface Probe specifically designed for confined installations
• Clear visual (LED) and audible indicators distinguish between water and hydrocarbon product layers
• Lightweight and portable with an ergonomic free-standing reel and integrated carry handle
• Durable design able to withstand frequent field deployment and decontamination
• Long cable lengths available to support deep installations and multi-point monitoring
• Compatible with Solinst accessories such as power winders, cinch straps, and protective cases

Applications:

• Hydrocarbon interface detection in narrow wells and multilevel sampling points
• LNAPL and DNAPL thickness measurement for remediation and site assessment
• Regulatory compliance monitoring at petroleum, industrial, and waste-impacted sites
• Groundwater monitoring networks requiring precise layer delineation
• Small diameter installation monitoring where standard meters cannot reach
• Support for down-hole tools and product recovery systems with documented interface depths