Neptune Systems Double Junction ORP Probe

The Double Junction ORP Probe from Neptune Systems is a lab-grade, high-durability probe designed to deliver longer life and more stable readings compared to standard single junction probes. Ideal for continuous ORP monitoring in saltwater aquariums, this probe is compatible with any controller or monitor featuring a BNC-style connector.

Its double junction design provides enhanced protection against contamination from proteins, organics, and other substances that can interfere with accurate measurements or degrade probe lifespan.

Key Features

• Double junction construction for extended probe life

• Stable and accurate ORP readings

• Reduced calibration frequency

• Compatible with all BNC-style connectors

• 10-foot cable for flexible installation

• Lab-grade reliability at an excellent value

Why Choose a Double Junction Probe?

Standard ORP probes often use a single junction between the reference fluid and the sample water. Over time, contaminants such as organic waste or precipitated minerals can clog the junction, affecting accuracy and lifespan.

Double junction probes include two protective barriers, isolating the sensitive reference materials from contaminants. This design allows for longer intervals between calibrations, greater measurement stability, and a longer operational lifespan—especially valuable in reef aquarium environments.

Specifications

• Connector Type: BNC

• Cable Length: 3 metres (10 feet)

• Junction Type: Double

• Application: ORP measurement in saltwater and freshwater aquariums

• Calibration: Recommended every 60–90 days

• Calibration solutions sold separately

What’s Included

• 1x Neptune Systems Double Junction ORP Probe with 3 m (10 ft) cable

  Note: Compatible with all Apex Controllers and other devices using BNC inputs. Calibration fluid not included.