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Neptune Systems - ORP Double Junction Probe is available for pre-order – please confirm stock before ordering!
The Neptune Systems ORP Double Junction Probe is a high-accuracy sensor designed to monitor oxidation-reduction potential (ORP) in marine and reef aquariums. Engineered for use with Apex controllers and modules like the PM1, this double junction probe delivers reliable, lab-grade measurements while offering superior resistance to contamination—ideal for long-term, stable operation in saltwater environments.
Unlike standard single-junction probes, this upgraded version includes an additional salt bridge, protecting the internal reference solution from contaminants in your tank. This results in longer probe life, increased measurement stability, and less frequent calibration—making it the go-to choice for serious reefkeepers and automated ozone control setups.
Key Features:
Double junction design for enhanced accuracy and extended lifespan
Continuously monitors ORP levels when connected to Apex systems via compatible module
Ideal for ozone control, water quality assessment, and redox balance
Factory-calibrated and ready for use out of the box
Highly resistant to fouling and contamination in reef environments
Compatible with Apex PM1, PM2, and other Neptune expansion modules
Maintain precise ORP levels and elevate your reef system's stability with the Neptune ORP Double Junction Probe—a premium-grade sensor built for performance and longevity.
