Description
The Hanna HI701 is a compact handheld colorimeter (Checker HC series) from Hanna Instruments designed for quick, accurate measurement of free chlorine in water. It provides a digital alternative to traditional chemical test kits, ideal for drinking water, pools/spas, food processing (vegetable rinse monitoring), disinfection control, and RO system protection Single-button operation: Zero with untreated sample, add reagent packet, and read digital result directly – no color matching needed This device is popular for its simplicity and precision in low-range free chlorine monitoring (note: for ultra-low range 0.000–0.500 ppm, Hanna offers HI701U). It’s more reliable than visual kits and bridges the gap to professional lab analyzers
Reagents (HI701-25 for 25 tests) and calibration check set (HI701-11) sold separately
Specifications
- Measurement Range: 0.00 to 2.50 ppm (mg/L) free chlorine
- Resolution: 0.01 ppm
- Accuracy: ±0.03 ppm ±3% of reading (at 25°C)
- Method: EPA-approved DPD (N,N-diethyl-p-phenylenediamine) colorimetric method – reaction produces a pink tint
- Light Source: LED at 525 nm
- Light Detector: Silicon photocell
- Power: 1 x 1.5V AAA battery (auto-off after 10 minutes of non-use)
- Environment: 0 to 50°C; RH max 95% non-condensing
- Dimensions/Weight: 86 x 61 x 37.5 mm; ~64 g
- Included: Device, 2 sample cuvettes with caps, starter reagents for 6 tests (HI701-25 packets), battery, instructions
Reviews
There are no reviews yet.