PHB-3 Economic Waterproof pH Pocket Tester (AI201)


  • SINGLE-Button operation with Easy Auto Calibration
  • Auto Temperature Compensation (ATC) ensures accuracy in variant temperatures (0-50.0˚C)
  • Complete kit with READY-TO-USE calibration solution and AAA batteries in a portable carrying case
  • Auto power-off in 10 min if no operation, low-battery alarm
  • 1000 hours of continuous operation powered by 2 AAA batteries


The Apera Instruments PHB-3 Economic Waterproof pH Pocket Tester is the most economic choice of a reliable pocket pH tester/meter for your regular aqueous solution's pH measurements, including hydroponics, aquaculture, pools& spas, education, tap/drinking water, etc. Easy single button operation for 1-point Auto Calibration (pH 7.0) and 0 to 50˚C Auto Temperature Compensation (ATC); ±0.1 pH, 0.5˚C accuracy with 0 to 14.0 pH range.

Comes with a complete kit of premixed calibration solution (pH 7.00), AAA batteries in a portable carrying case. Auto power-off in 10 min if no operation, low-battery alarm. IP57 waterproof and dustproof, floating on water so you don’t have to worry if it falls into water by accident. 1000 hours' continuous operation (without backlit) powered by AAA batteries.

The meter is CE certified and comes with a 2-year warranty.

Catalog No.: AI201

We dispatch worldwide

For purchases that exceeds $100