Hanna HI 9811-51 pH / EC / TDS / T° Meter – Complete Water Quality Monitoring

All-in-one precision for professional water testing. The Hanna HI 9811-51 Meter is a versatile, easy-to-use device designed to measure pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), and temperature in a single tool. Paired with the durable HI 1285-51 probe, this meter delivers reliable readings for hydroponics, aquaponics, and general water quality management. With its lightweight, waterproof design and automatic calibration, it’s an essential device for growers and water testing professionals.

Why Choose Hanna HI 9811-51 Meter?

The Hanna HI 9811-51 Meter combines advanced functionality with user-friendly features, ensuring consistent accuracy and convenience.

• 4-in-1 functionality: Measures pH, EC, TDS, and temperature for comprehensive water analysis.
• High accuracy: Advanced sensors provide consistent, precise readings.
• Durable probe: Includes the HI 1285-51 probe for reliable performance.
• Automatic calibration: Simplifies setup and ensures accurate results.
• Waterproof and portable: Designed for durability and convenience in any environment.

How to Use

Using the Hanna HI 9811-51 Meter is straightforward:

1. Power on: Press the power button to activate the meter.
2. Select mode: Switch between pH, EC, TDS, or temperature readings with the mode button.
3. Insert probe: Submerge the HI 1285-51 probe into the water or solution to be tested.
4. Read results: View the measurement on the clear digital display.
5. Calibrate: Use the included calibration solutions for optimal performance.

Product Specifications

• Type: Multi-parameter water quality meter
• Compatibility: Includes HI 1285-51 probe
• Best for: Hydroponics, aquaponics, and water quality management
• Features: Waterproof, automatic calibration, and lightweight design
• Power: Battery-operated for portability

Why Hanna Instruments?

Hanna Instruments is a trusted leader in water testing solutions, delivering innovative and reliable tools for growers and professionals. The HI 9811-51 Meter exemplifies this dedication, providing an all-in-one solution for precise water quality monitoring. Whether optimizing nutrient solutions or ensuring clean water, this meter is your trusted partner for accurate results.

Order Yours Today

Upgrade your water testing capabilities with the Hanna HI 9811-51 pH / EC / TDS / T° Meter. Click below to return to the Add to Cart section and experience comprehensive, precise water quality management.

Shipping Information

Exceptional products deserve exceptional service. Orders to the US and Canada arrive in just 2–10 business days. Spend over $125, and shipping’s on us—it’s our way of saying thank you. For details, see our Shipping Policies.

Returns & Exchanges

Your satisfaction matters. Return your purchase within 30 days, hassle-free, as long as it’s unopened and in its original condition. Learn more in our Returns & Exchanges Policies. Shop confidently—your peace of mind is guaranteed.