Hanna HI5521-01 Professional benchtop pH/EC meter

Hanna HI5521-01 Professional benchtop pH/EC meter

The Hanna HI5521-01 Professional benchtop pH/EC meter is a professional-grade benchtop meter engineered for high-precision pH and conductivity (EC) measurements, along with Total Dissolved Solids (TDS), salinity, and resistivity. Featuring advanced calibration options, a customizable interface, and dual measurement capability, the HI5521-01 is the ideal solution for laboratory and industrial environments requiring versatile and reliable electrochemical analysis.

Features

• Dual Measurement Capability
  Simultaneously measure pH and conductivity (EC) on a single platform, reducing equipment clutter and increasing efficiency.

• High-Resolution pH Accuracy
  Provides pH resolution options of 0.1, 0.01, and 0.001 pH, with accuracy up to ±0.002 pH ±1 LSD.

• Advanced EC/TDS Measurement
  Measures a wide range of conductivity and TDS values with automatic or manual temperature compensation, suitable for ultra-pure to brine-level samples.

• Multipoint pH and EC Calibration
  Up to 5-point pH calibration and multi-point EC calibration using standard or custom values, including auto-recognition of key calibration standards.

• Comprehensive Salinity and Resistivity Support
  Supports salinity readings in PSU, ppt, or percentage, and resistivity up to 100.0 MΩ•cm, with high accuracy and configurable scaling.

• Temperature Compensation Options
  EC/TDS/Salinity measurements can be temperature-compensated using disabled, linear, or non-linear (natural water) modes with customizable coefficients.

• Customizable Interface and Logging
  Bright display with flexible unit settings, advanced data recording, and intuitive navigation for professional laboratory workflows.

Specifications

pH Measurement

• Range:
  -2.000 to 20.000 pH

• Resolution:
  0.1 / 0.01 / 0.001 pH

• Accuracy (@25°C):
  ±0.1 / ±0.01 / ±0.002 pH ±1 LSD

• Calibration:
  Automatic, up to 5 points with 8 standard buffers (1.68, 3.00, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45) and 5 custom buffers

• Temperature Compensation:
  Automatic or manual, -20.0 to 120.0°C

EC (Electrical Conductivity)

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

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

• Calibration:
  Auto-recognition of standard solutions or user-defined, single- or multi-point

TDS (Total Dissolved Solids)

• Range:
  0.000 ppm to 400.0 ppt (actual TDS*, with 1.00 factor)

• Resolution:
  0.001 ppm to 0.1 ppt

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

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

• Calibration:
  One-point (percent scale using HI7037 standard)

• Temperature Compensation:
  Disabled, linear, or non-linear

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)

Temperature

• Range:
  -20.0 to 120.0°C / -4.0 to 248.0°F / 253.15 to 393.15 K

• Resolution:
  0.1°C / 0.1°F / 0.1 K

• Accuracy:
  ±0.2°C / ±0.4°F / ±0.2 K (without probe)

Applications

The HI5521-01 is ideal for:

• Laboratories – precise pH, conductivity, and salinity testing for research or quality assurance.

• Water and Wastewater Treatment – compliance monitoring for pH, TDS, EC, and resistivity.

• Pharmaceuticals – purity checks and formulation stability across multiple ionic parameters.

• Food & Beverage Industry – salinity control and process monitoring in production lines.

• Environmental Monitoring – analyze natural and industrial water samples with wide conductivity range.