Hanna Colour of Water Photometer (HI-97727)
Accurate water colour measurement for drinking water and municipal applications
The HI-97727 is a compact, waterproof photometer engineered to measure the true colour of water using a standardized platinum cobalt method. It eliminates subjective visual comparison and provides reliable digital results for professional water quality analysis.
This instrument is especially useful for detecting natural and industrial contamination in water sources, ensuring compliance with safety and quality standards.
Why colour of water measurement is important
Water colour is an important indicator of water quality and can reveal the presence of dissolved substances:
- Indicates organic and inorganic contamination
- Affects suitability for drinking and industrial use
- Helps monitor treatment efficiency in water systems
There are two key types of colour measurement:
- True colour → filtered water (no turbidity)
- Apparent colour → includes suspended particles
The HI-97727 measures true colour accurately up to 500 PCU, ensuring precise water quality evaluation.
Advanced optical system for high accuracy
The HI-97727 features a professional-grade optical system designed for laboratory-level precision:
- Reference detector compensates for light fluctuations
- Narrowband interference filters ensure wavelength accuracy
- LED light source provides stable and energy-efficient illumination
- Optical focusing lens reduces errors from cuvette imperfections
This ensures highly stable, repeatable results across all measurements.
Fast, simple, and user-friendly operation
The HI-97727 includes a built-in tutorial mode that guides users step-by-step through the measurement process, reducing errors and improving consistency.
Typical workflow:
- Fill cuvette with water sample
- Zero the instrument
- Insert cuvette and start measurement
- Read colour value instantly in PCU
No warm-up time is required, enabling immediate testing.
Built for field and laboratory use
The HI-97727 is designed for portability and durability, making it suitable for both on-site field testing and lab environments.
Key features include:
- IP67 waterproof protection
- Backlit dot matrix LCD with virtual keys
- Storage of last 50 measurements (GLP compliant)
- Contextual help function
- Auto shut-off to preserve battery life
CAL Check™ calibration verification
Hanna’s CAL Check™ system allows users to verify instrument performance using NIST-traceable standards. This ensures ongoing accuracy and confidence in measurement results.
Ideal For
- Drinking water quality testing
- Municipal water treatment plants
- Environmental monitoring
- Industrial process water analysis
- Surface and groundwater studies
What’s Included
- Hanna HI-97727 Portable Photometer
- 2 x glass cuvettes with caps
- 2 x plastic stoppers
- 3 x AA batteries
- Instruction manual
- Instrument quality certificate
Optional Accessories
- CAL Check™ standards for HI-97727
- Cuvette cleaning cloths
- Cuvette cleaning solutions
- Replacement glass cuvettes and caps
Key Benefits
- Measures water colour up to 500 PCU
- Advanced optical system for high accuracy
- Eliminates subjective visual colour testing
- Fast, repeatable digital results
- No warm-up time required
- IP67 waterproof design
- Built-in tutorial mode for ease of use
- CAL Check™ performance verification
- Long battery life (up to 800 measurements)
Technical Specifications
- Measurement Range: 0 to 500 PCU
- Parameter: Colour of Water (True Colour)
- Method: Platinum Cobalt (Colorimetric method)
- Light Source: LED
- Filter Bandwidth: 8 nm (±1 nm accuracy)
- Data Storage: Last 50 readings
- Display: Backlit LCD (71 x 37 mm)
- Battery: 3 x AA batteries
- Auto Shut-Off: After 15 minutes
- Protection: IP67 Waterproof
Important Notes
- Designed for true colour measurement in water
- Suitable for drinking water and municipal systems
- Turbidity should be removed for accurate results
- Always follow calibration and handling instructions
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