pH and ORP Benchtop Meter with Data Logging – HI2621

HI2621 enables fast, accurate pH and ORP measurements utilizing the Hanna Instruments® HI11310 digital pH electrode and HI36180 digital ORP probe. The digital electrode has a unique serial number and, once connected, is automatically identified by the meter.

HI2621 measures pH and ORP while adding data logging and data transfer capabilities. The intuitive design simplifies configuration, calibration, measurement, data logging and transfer (to a USB thumb drive or computer).

HI2621 offers a Basic Mode that streamlines measurement configuration and is useful for routine applications as well as a Standard operating Mode, where all features and capabilities are enabled.

Large display with capacitive keys The meter features a 5.5” (14 cm) LCD display. The large display provides a 130 ° wide viewing angle.

Main feature points

• Automatic parameter recognition

• Choice of measurement units: pH, mV

• CAL Check™ indicators

• Sensor Check™ indicators

• Basic mode for simplified operation

• Dedicated GLP key

• Internal clock and date

• Adjustable resolution

• GLP data included with logged data

• Simplified data transfer to a PC

Features in-depth

Digital probe input

Simply connect each probe via the 3.5 mm jack, Digital Smart Electrodes are automatically recognized.

Clear, full text readout

The HI2621 presents clear, detailed text prompts at the bottom section of the screen.

Two operating modes

HI2621 can be used in Standard or Basic Operating Modes. Standard Mode enables all features while Basic Mode displays a simplified screen and features — ideal for routine measurements.

Data logging

The HI2621 provides data storage capacity up to 1000 log records. Each data set comprehensively includes readings, GLP information, as well as date and time stamps.

GLP (Good Laboratory Practice)

The sensor retains data from the most recent calibration, including the date, time, and buffers utilized. This information is available in basic and standard modes and is also included with logged data.

CAL Check™

Hanna’s exclusive CAL Check feature analyzes the pH electrode’s response in calibration buffers to detect potential issues such as contaminated solutions or dirty electrodes. Upon completing calibration, indicators reflecting the probe’s condition — based on its offset and slope characteristics — are displayed on the measurement screen.

Sensor Check™ (using HI11311 and HI12301 pH probes only)

When paired with compatible Hanna electrodes featuring a matching pin, HI2621 continuously monitors the impedance of the pH measuring electrode, providing real-time alerts in case of glass breakage. During calibration, Sensor Check displays the junction condition, by evaluating the reference junction resistance.

ORP measurement

Measure ORP (REDOX) in mV units by using a compatible ORP sensor.

Capacitive touch keypad

HI2621 features sensitive capacitive touch buttons for accurate keystrokes for navigating menus and screens. Since they are part of the screen, the buttons can never get clogged with sample residue.

Easy to read LCD

HI2621 features a 5.5” (14 cm) LCD display that you can clearly view from over 5 m (16.4’). The large display, with its wide 150° viewing angle, provides one of the easiest to read LCDs in the industry.

USB-C port for data transfer

The HI2621 features a streamlined USB-C port that facilitates transferring data to your computer.

Each device is supplied with:
• HI11310 pH digital electrode
• pH calibration kit
˚ pH 4 buffer solution (2 sachets)
˚ pH 7 buffer solution (4 sachets)
˚ pH 10 buffer solution (2 sachets)
˚ Electrode cleaning solution (2 sachets)
• HI764026 Electrode holder for HI2600 family
• HI920018 USB-C to USB-C cable
• USB‑C power adapter
• Instrument quality certificate
• Electrode quality certificate
• Battery safety insert
• Quick reference guide with QR code for instruction manual download