pH and conductivity testers that fit in your pocket.
Take accurate and reliable measurements with our portable testers that go where you go.
Learn MoreFeatured Testers

pH Tester
Waterproof. Extended life.
0.01 pH resolution/ ±0.1 pH accuracy.
A renewable junction helps your slim pH tester last longer.

pH and EC Combo Tester
Robust. Complete.
0.01 pH resolution/0 to 3999 µS/cm.
Take conductivity and pH measurements with one simple device.

Digital Thermometer
Portable. Versatile.
-50.0 to 150.0°C/ -58.0 to 302.0°F.
Our most popular thermometer.

Take care of your pocket testers.
Trust that your pH probes are properly cared for with cleaning solutions ranging from dairy deposits to soil.
Shop cleaning solutionsOur extensive line of calibration solutions is formulated for a variety of needs, from the technical user to the hobbyist.
Shop calibration solutionsWe can help you keep your pH tester running smoothly with our storage solutions.
Shop storage solutions
Combo Testers

pH & EC Combo Tester
Robust. Complete.
0.01 pH resolution/0 to 3999 µS/cm
Take pH and conductivity measurements with one simple device.

pH & ORP Combo Tester
Do More. Save Time.
0.01 pH resolution/ ±1000 mV ORP.
Measure pH and ORP without needing two meters.

GroLine pH & EC Combo Tester
Specialized. Advanced.
0.01 pH resolution/ 0 to 3999 ppm.
Ideal for growers who need higher performance.