verifiedNSF-61 Certified • Made in USA

Chlorine Analyzers & Sensors

Reagent-free, membrane-free amperometric technology with self-cleaning electrodes. NSF-61 certified for direct in-pipe installation. Deploy anywhere — wet-tap, immersion, side-stream, or flow cell.

Halogen D20 Controller with MP Sensor System

Complete Product Lineup

From single-parameter sensors to integrated cloud systems, Halogen offers solutions for municipal water systems, commercial buildings, maritime operations, and industrial facilities.

sensors

MP5 Free Chlorine

Flagship 5-parameter reagentless chlorine analyzer. Free chlorine, pH, ORP, conductivity, temperature.

MP5 Free Chlorine
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science

MP-TOTAL

Total chlorine and monochloramine measurement for chloraminated systems.

MP-TOTAL
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thermostat

MP-HOT

Hot water chlorine monitoring up to 80°C. NSF-61 certified for Legionella prevention.

MP-HOT
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tune

D20 Controller

Touchscreen display and control unit. 4-20mA output, Modbus, relay control.

D20 Controller
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cloud

Halogen Cloud

View sensor data history, trends, and real-time alerts with a Data Plan.

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Data from Anywhere

Cellular IoT, Sensus AMI, and BLE connectivity for remote monitoring.

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Installation Options

Deploy your sensor in the way that fits your infrastructure. Wet-tap into a main line, immerse in a tank, install in a vault, or use a side-stream flow cell.

plumbing

Wet-Tap

scuba_diving

Immersion

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Side-Stream

water

Flow Cell

directions_boatMaritime & Ballast Water

Ballast Water Compliance

Total Residual Oxidant (TRO) monitoring for international maritime ballast water management regulations. Real-time compliance reporting and remote telemetry for fleet vessels.

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Maritime ballast water monitoring

Not sure which sensor you need?

Answer a few quick questions about your water system, application, and requirements. Our Product Selector recommends the ideal Halogen configuration for your site.

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Ready to Transform Your Water Quality Monitoring?

Join hundreds of water utilities and facilities that have eliminated reagents, reduced maintenance costs, and gained real-time insight with Halogen sensors.