Horiba LAQUAtwin Conductivity Meter with 3 calibration points and temperature measurement (EC-22)

Find out more about the accuracy of HORIBA’s pocket conductivity testers: your ideal choice for precise conductivity measurements. The EC-11, EC-22 and EC-33 models, manufactured in Japan, represent the pinnacle of quality in pocket testers. They offer numerous benefits for users in laboratories, industry, aquaculture, water treatment, schools and universities, as well as amateur gardeners.

An overview of the HORIBA Conductivity Pocket Tester series:

Applications and benefits for the user:

Thanks to their user-friendliness, durability and ‘Made in Japan’ quality, HORIBA pocket conductivity testers are a reliable solution for a variety of measurement applications.

Manufacturer’s item number: 3999960126

LAQUAtwin EC-22: The world’s first pocket-sized conductivity meter

Your mobile laboratory – for on-site use: Ideal for water quality testing in aquariums, foodstuffs and many other applications.

HORIBAs unique compact analyser integrates the electrode, display and sample chamber to enable simple, effective on-site testing through direct measurement using a single drop.

• Minimum sample volume: 0.12 ml
• Up to 3 calibration points
• Conductivity and temperature display
• Automatic range
• Automatic calibration
• Automatic standard recognition: 1413 µS/cm, 12.88 mS/cm, 111.8 mS/cm
• Automatic temperature compensation: 2%/°C fixed
• Temperature calibration: 5 to 40.0 °C
• Automatic stabilisation / automatic hold measurement
• Automatic switch-off: 30 mins
• Low battery indicator
• IP67 rating: dust and water resistant
• Replaceable sensor
• 400-hour battery life: continuous operation without backlight
• Materials: ABS-epoxy housing and titanium coating with platinum-black sensor
• Display: custom (monochrome) LCD with backlight
• Operating conditions: 5 to 40°C, 85% or less relative humidity
• Warranty: 2 years – meter, 6 months – sensor
• Packaged in a handy carrying case

Supplied with 1413 µS/cm & 12.88 mS/cm conductivity standards (14 ml each), conditioning solution (4 ml), 2 x CR2032 batteries, dropper, instructions and quick start guide

Additional information

We would like to inform you of an upcoming product update for the LAQUAtwin pocket-sized analysers.

To enhance product safety and prevent accidental swallowing of the batteries by infants and young children, HORIBA will be introducing a new battery cover on all LAQUAtwin pocket-sized analysers.

Overview of the product change

• Change: Battery cover for increased safety.
• Reason: To prevent accidental swallowing of batteries.
• Production date: from January 2026 in Japan
• Deliveries to EMEA distribution partners: from March 2026

As this change is currently being rolled out, you may receive mixed deliveries of the current and updated versions during the transition period.

Please note: The EC4 replacement sensors, both old and new, are not compatible with each other. Similarly, the conditioning solutions for the old and new versions are not compatible with the respective device variants.

How can you tell if you have an older or a new device?

If your Pocket Tester is marked ‘4-cell’, you have the latest version of this device. In this case, you will need the replacement sensors listed in the cross-selling section, as well as the standard and conditioning solutions. These have been specially optimised for the new Pocket Testers and are not suitable for the older models.