Hanna HI5521-02 Professional benchtop pH/EC meter

Hanna HI5521-02 Professional benchtop pH/EC meter

The Hanna Hanna HI5521-02 Professional benchtop pH/EC meter is a high-accuracy, professional-grade benchtop meter designed for demanding laboratory and industrial applications. Supporting pH, EC, TDS, resistivity, salinity, and mV measurements, this meter delivers precision, customization, and compliance—making it ideal for regulatory and research environments. It also features dual-channel input, extensive calibration options, and full USP compatibility.

Features

• Multi-Parameter Functionality
  Accurately measures pH, EC (conductivity), TDS, resistivity, salinity, temperature, and mV (ORP or ion-selective) — all in one device.

• Exceptional pH Accuracy and Flexibility
  Provides pH readings from -2.000 to 20.000 with selectable resolution (0.1 / 0.01 / 0.001 pH) and accuracy up to ±0.002 pH ±1 LSD.

• High-Range EC & TDS Measurement
  Handles a wide range of EC and TDS values, from ultra-pure water to brine-level samples, with automatic temperature compensation and user-defined temperature correction coefficients.

• USP Compliance and Profile Saving
  Complies with USP conductivity testing standards and allows users to save up to 10 profiles (5 per channel) for repeatable and regulated testing workflows.

• Comprehensive Salinity & Resistivity Analysis
  Supports multiple salinity scales (PSU, ppt, and %) and resistivity up to 100.0 MΩ•cm, enabling diverse applications from seawater to pharmaceutical-grade water testing.

• Built-In Calibration Features
  Offers multi-point automatic pH calibration (with 8 standard and 5 custom buffers), auto-recognition of EC standards, and calibration reminders to ensure continued accuracy and consistency.

• Customizable Temperature Compensation
  Apply linear or non-linear (natural water) compensation or disable it entirely. Reference temperature and correction coefficient settings are fully adjustable.

Specifications

pH Measurement

• Range: –2.000 to 20.000 pH

• Resolution: 0.1 / 0.01 / 0.001 pH

• Accuracy: ±0.1 / ±0.01 / ±0.002 pH ±1 LSD

• Calibration: Up to 5 points (8 standard + 5 custom buffers)

• Temp. Compensation: Manual or automatic, –20.0 to 120.0°C

mV Measurement

• Range: ±2000 mV

• Resolution: 0.1 mV

• Accuracy: ±0.2 mV ±1 LSD

Temperature

• Range: –20.0 to 120.0°C

• Resolution: 0.1°C

• Accuracy: ±0.2°C (without probe)

EC (Conductivity)

• Range:
  0.000 to 1000.0 mS/cm (absolute EC)

• Resolution:
  0.001 to 0.1 µS/cm and mS/cm

• Accuracy: ±1% of reading (±0.01 µS/cm)

• Cell Constant: 0.0500 to 200.00

• Cell Type: 4-cell conductivity probe

• Calibration: Auto-recognition + custom standards

• Calibration Reminder: Yes

• Temp. Coefficient: 0.00 to 10.00%/°C

• Temp. Compensation: Disabled / linear / non-linear

• Reference Temp.: 5.0 to 30.0°C

TDS (Total Dissolved Solids)

• Range: 0.000 ppm to 400.0 ppt

• Resolution: 0.001 ppm to 0.1 ppt

• Accuracy: ±1% of reading (±0.01 ppm)

Resistivity

• Range: 1.0 Ω•cm to 100.0 MΩ•cm

• Resolution: 0.1 Ω•cm to 0.1 MΩ•cm

• Accuracy: ±2% of reading (±1 Ω•cm)

Salinity

• Range:

  • Practical scale: 0.00 to 42.00 PSU

  • Natural seawater scale: 0.00 to 80.00 ppt

  • Percent scale: 0.0 to 400.0%

• Resolution:
  0.01 PSU/ppt, 0.1%

• Accuracy:
  ±1% of reading

Applications

The HI5521-02 is designed for:

• Pharmaceutical Laboratories – USP-compliant conductivity testing, water purity checks, and buffer quality monitoring.

• Industrial Quality Control – salinity, TDS, and resistivity testing in chemical and production environments.

• Environmental Monitoring – freshwater and seawater quality analysis with support for natural water temperature compensation.

• Academic Research – multi-parameter capability in chemical, biological, and environmental sciences.

• Food & Beverage Production – pH, EC, and salinity control in processing, fermentation, and packaging.