The ultimate pH pocket tester. Your lab-in-a-pocket.

Pocket pH meter with two point calibration, 0.1 pH accuracy. It’s the Horiba Laqua pH11.

For urine, saliva, water, soil or other fluid measurement. Whether you need to keep the pH of an aquarium within tight limits, are checking for the acidity of rain water or for the quality of meat and fish products, this compact pH meter is ideal no matter where or when you need to test.

Comes with case, 4 & 7 pH calibration fluids, instructions, and net access to the Biomedx pH manual, chart, and tracking sheets.

Calibrate and measure at the touch of a button — the smiley face will tell you when the result can be read.

Hassle-free automatic calibration with a few drops of standard solution reassures you of your measurement accuracy.

Flat Sensor Technology

Highly-sensitive, flat sensor technology opens up new possibilities for sampling and sample types. Only a small amount of sample is required, so you can easily sample in situ without the need for beakers or other labware. Sensors are easily replaced as required.


Sampling sheets allows trace volumes to be analyzed. For example, you can even measure the pH of human skin by wiping with a sampling sheet soaked in pure water, and placing it on the sensor. Using the HORIBA sampling sheet, volumes down to 0.05 mL can be tested.

Carry case comes standard for handy portability.

The compact carry case contains everything you need for your measurements, including the standard solution and sampling sheets.

IP67 rated.

The meter and sensor are fully waterproof and dustproof, so you can take it anywhere. (Will withstand immersion for 30 minutes at 1 m.)

Employing the same test principle as standard laboratory electrodes, the meter incorporates a glass membrane and a reference electrode into the flat sensor that’s less than 1mm thick. Tests liquids in trace volumes, and can also be used for solids, powders, and paper/materials (containing moisture).


See it in Action

LAQUA-making-measures LAQUA-meter-cleaning





Measurement principle:  Glass electrode method

Minimum sample volume: 0.1mL or more (Smaller amount (0.05mL or more) can be measured with the sampling sheet B.  Please close the light shield cover. If a sample that contain particulate, please use ”Sampling sheet holder” (sold separately)

Measurement range: 2 to 12pH

Display range: 0 to 14pH (When the measured value is out of the measurement range, the displayed value blinks. It should be used only as a guide.)

Range and Resolution: 0.1pH (Selectable)

Calibration: Two-point (Selectable between one-point and two-point calibrations.)

Accuracy: ±0.1pH

Functions: Temperature compensation -Waterproof (IP67- no failure when immersed in water at a depth of 1 meter for 30 minutes -but the product can not be used underwater.) Auto hold - Automatic power off (30 minutes)

Display: Custom (monochrome) Digital LCD

Operating temperature/humidity: 5 to 40˚C, 85% or less in relative humidity (no condensation)

Power: CR2032 batteries (x2)

Battery life: Approximately 400 hours in continuous use

Main Material: ABS epoxy

Dimensions/Mass: 164mm × 29mm × 20mm  (excluding projections)/ Approx. 50 g (meter only, without batteries)

Accessories included: 2 CR2032 batteries/1 Pipette/Instruction manual/Quick manual/Storage case/ Standard solution (pH4.01 & pH 7.00, 14mL ea.)

Applications include:

Fresh water testing (rain, rivers, lakes, hot springs); aquaria; drainage treatment solutions; soil testing for improved agriculture; fermentation and brewing; food freshness testing; research laboratories; QC of medical supplies and cosmetics; preventative dentistry; school education, etc.