Solinst 122 Mini Interface Meter

  • Accurate, Reliable and Robust Designed specifically for rugged field use, whilst ensuring accurate readings and compact enough to fit into a backpack
  • Non Corrosive Tapes Stranded stainless steel conductors do not stretch or corrode, are hardwearing and resist kinks
  • IN STOCK Next Day Delivery (if paperwork received by 12noon previous day)
  • ATEX Certification
Product Options
Carry Case Required


Solinst Mini 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 Model 122M Mini Interface Meter with laser marked cable is a convenient small version, which can easily fit in a backpack or an optional custom mini carry case. It uses narrow laser marked cable in 25 m or 80 ft lengths.

The Mini Interface Meter enhanced electronics include automatic circuitry testing; 300 hours of on-time battery life; clear signals; and high accuracy. The circuits are powered by one standard 9V battery housed in easy-access drawer in the faceplate.

Also available is the standard Solinst Model 122 Interface Meter with laser marked flat tape in lengths up to 300 m (1000 ft).


The 122M uses the P8 Probe, which is 16 mm (5/8") in diameter and stainless steel. It is pressure proof, up to 500 psi. The beam is emitted from within a Hydex cone-shaped tip. The tip is protected by an integral stainless steel shield, and is excellent for the vast majority of product monitoring situations. A cleaning brush is included with each Meter.

Manufactured by: Solinst
Model: Solinst 122 Mini Interface Meter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Identifying oil/product
Wastewater management/landfill
Well monitoring


122M Probe 5/8” diameter (16 mm) stainless steel.
Tape The easy-to-read markings on the tape are permanently heat-stamped into the tape. The dog bone shaped tape avoids adherence to wet surfaces in wells. It is resistant to most chemicals, and the smooth surface of the tape is easy to decontaminate, and easy to handle.
N2 and N3

As above, but on the narrow 1/4” (6 mm) tape for the 122 Mini Interface Meter.


Related products


The Model 122 will detect all types of DNAPL and LNAPL layers as long as both are pure/non-conductive, it will only face an issue if the base of the well is very thick and sticks to the probe which would mask it but you will still get a reading slowly lowering the probe into the DNAPL. You can read the manual HERE
The Solinst Model 122 has an accuracy of 1.0mm. You can read the manual HERE
No, Solinst certifies that PFAS is not used, or knowingly present in the manufacturer, or production of their products.