Spectra Scientific | Professional Grade Groundwater Monitoring
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.
The Spectra Field Pro III offers decades of durability, with early models still running on minimal maintenance.
The Spectra Field Pro combines all essentials into one compact unit, eliminating bulky battery packs for ultimate convenience.
We’re with you every step of the way. Spectra's lifetime support ensures you’re never without expert guidance or reliable assistance.
Our Professional Grade products are built to last, so we hope you’ll only contact us for support or training.




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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Conor GTrustindex verifies that the original source of the review is Google.
Incredible team, reliable and friendly service, and exceptionally accommodating!Posted on Google![]()
Aum KushalkarTrustindex verifies that the original source of the review is Google.
Great experience working with Spectra Scientific. Very helpful and friendly(easy to talk to), and the equipment was clean, reliable, and ready to go whenever asked for. Hardworking and amazing team, loved every second with them.Posted on Google![]()
Nicholas MooreTrustindex verifies that the original source of the review is Google.
In the past few years, Spectra has always been my go to for all my environmental equipment needs, the folks are always willing to assist and/or provide me the best possible solution for challenges I may face on field trips with reliable equipment and knowledgable employees who can provide realtime support when needed. 10/10 would recommend.Posted on Google![]()
Osman AzimyTrustindex verifies that the original source of the review is Google.
Very professional and excellent service