Heron H.Oil Oil Water Interface Meter

The Heron H.OIL Oil/Water Interface Probe is a slim, intrinsically safe field instrument designed to accurately detect and measure the thickness of floating or sinking product layers (LNAPL and DNAPL) in groundwater wells, tanks, and remediation sites. Featuring a rugged stainless-steel probe (5/8″ diameter) and a premium Kynar® coated tape, the meter provides reliable readings even in harsh environments. Its advanced optical sensor distinguishes between hydrocarbons and water to within 1 mm, with both audible and visual alerts for precision. Built for long-term durability, the H.OIL is certified to ATEX, IECEx, CSA, and UL standards for safe use in hazardous locations. Complete with a waterproof reel, ergonomic grip, and field accessories, the Heron Interface Probe is the trusted solution for environmental monitoring, spill response, and site remediation projects.

Product Details

Optical Sensor: Works reliably even in direct sunlight
Power Supply: 9V battery (long battery life)
Reel & Housing: Waterproof (IP65), ergonomic grip, grounding lead, stainless steel bearings
Indicators: Audible tone + LED light for hydrocarbon detection

Key Features

Probe Diameter: Slim 5/8″ (13–16 mm), suitable for narrow wells and sampling equipment
Slim 5/8″ probe for use in small-diameter wells and piezometers
High-sensitivity optical sensor detects layers as thin as 1 mm
Audible (tone) and visual (LED) interface indication for precise readings

Applications

Groundwater Remediation: Detect floating LNAPLs (light oils, fuels) and sinking DNAPLs (chlorinated solvents, creosote) in aquifers
Spill Response & Site Assessment: Quickly confirm presence and thickness of hydrocarbon contamination
Environmental Monitoring: Long-term tracking of remediation sites, landfills, and storage tanks

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)

    
 
 
       Posted on Google  
   
   Conor G 
 
 
 
 Trustindex verifies that the original source of the review is Google. Incredible team, reliable and friendly service, and exceptionally accommodating!
  
 
      Posted on Google  
   
   Aum Kushalkar 
 
 
 
 Trustindex 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 Moore 
 
 
 
 Trustindex 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 Azimy 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very professional and excellent service