HANNA Free Chlorine Low Range Checker

The HI-701 Free Chlorine Low Range Checker offers a simple, accurate, and affordable way to measure low concentrations of free chlorine in water.

Designed as a more reliable alternative to traditional chemical test kits, this compact device delivers quick and precise results in just a few easy steps. It uses a fixed wavelength LED and a silicon photo detector to provide the accuracy of professional instrumentation at a fraction of the cost. Operating with an EPA-approved DPD method (Standard Method 4500-Cl G), the reaction between chlorine and the reagent creates a color change, which the checker measures with high resolution and accuracy.

Key Features:

• Compact, palm-sized design for easy handling
• High accuracy with ±0.03ppm ±3% of reading
• Dedicated to a single parameter for reliable free chlorine measurement
• Operates on 1 x AAA battery (included)
• Auto power-off after 2 minutes of inactivity
• Built-in timer for consistent reaction readings

Measurement Range:

0.00 to 2.50ppm (mg/L)

What’s Included?

• 2 cuvettes with caps
• Reagent starter kit (6 sachets)
• 1 x AAA battery
• Instruction manual

Spare Reagents:

Refill reagent kits are available separately, containing 25 sachets for additional tests. Simply select the refill option from the dropdown menu.

Specifications:

• Range: 0.00 to 2.50 ppm (mg/L)
• Resolution: 0.01 ppm (mg/L)
• Accuracy: ±0.03 ppm or ±3% of reading @ 25°C
• Measurement Method: EPA-approved DPD method (Standard Method 4500-Cl G)
• Light Source: LED @ 525 nm
• Light Detector: Silicon photocell
• Environment: 0 to 50°C (32 to 122°F); RH max 95% non-condensing
• Power Supply: 1 x AAA battery
• Auto Power-Off: After 2 minutes of inactivity
• Dimensions: 81.5 x 61 x 37.5mm
• Weight: 64g

This free chlorine checker is an essential tool for anyone needing fast and accurate chlorine monitoring, perfect for testing dechlorinator units and tap water supplies.