Hanna Dissolved Oxygen Photometer – HI-97732

Hanna Dissolved Oxygen Photometer (HI-97732)

Accurate portable dissolved oxygen testing with digital precision

The Hanna HI-97732 is a compact, waterproof photometer designed for precise dissolved oxygen measurement using the Winkler method. It eliminates subjective interpretation by replacing visual colour comparison with clear digital readings, ensuring consistency and accuracy across tests.

With a measurement range of 0.0 to 10.0 mg/L, this photometer is ideal for monitoring oxygen levels in a wide range of water applications.

Why dissolved oxygen testing is essential

Dissolved oxygen is one of the most critical indicators of water quality:

• Low DO levels → harmful to aquatic organisms
• High DO variations → indicate environmental changes
• Oxygen balance → essential for biological and chemical processes

Accurate monitoring helps maintain healthy ecosystems and ensures compliance in water treatment and environmental analysis.

Advanced optical system for reliable results

The HI-97732 features a high-performance optical system for superior accuracy:

• Reference detector compensates for fluctuations
• Narrow band interference filters for precise wavelength control
• High-efficiency LED light source
• Focusing lens reduces measurement errors

This ensures fast, stable, and repeatable readings every time.

Simple and guided testing process

Built with ease-of-use in mind, the HI-97732 includes a step-by-step tutorial mode:

1. Fill the cuvette with your sample and zero the meter
2. Add reagent and mix
3. Insert cuvette into the photometer
4. Read the dissolved oxygen level on the display

A built-in reaction timer ensures accurate and consistent results.

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Ideal For

• Environmental water monitoring
• Aquaculture and fisheries
• Wastewater treatment
• Laboratory testing
• Educational and research use
• Field water analysis

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What’s Included

• Hanna HI-97732 Photometer
• 2 x sample cuvettes
• 2 x cuvette caps
• 2 x plastic stoppers
• 1.5V AA batteries
• Instruction manual
• Instrument quality certificate

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Optional Accessories

• HI-93732-01 Dissolved Oxygen Reagents (Winkler Method)
• HI-93732-03 Reagents (300 tests)
• HI-97732-11 CAL Check™ Standards

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Key Benefits

• Accurate dissolved oxygen measurement (0.0–10.0 mg/L)
• Portable and waterproof design
• No warm-up time required
• Digital readings with no colour matching
• Built-in tutorial mode
• Backlit LCD with intuitive interface
• Stores last 50 measurements (GLP data)
• Supports powder and liquid reagents
• Long battery life (~800 tests)
• Auto shut-off to conserve power

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Technical Specifications

• Measurement Range: 0.0 to 10.0 mg/L (DO)
• Method: Colorimetric (Winkler method)
• Light Source: LED
• Optical Bandwidth: 8 nm
• Wavelength Accuracy: ±1 nm
• Detector: Silicon photocell with reference detector
• Cuvette Size: 25 mm path length
• Display: Backlit dot matrix LCD
• Battery: 3 x AA
• Auto Shut-Off: After 15 minutes
• Data Storage: Last 50 measurements
• Waterproof: Yes

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Important Notes

• Reagents required for operation (sold separately)
• Suitable for freshwater and treated water systems
• Follow reagent safety instructions carefully
• Product image for illustration only