This popular portable digital pH tester is an essential analytical instrument for fast, accurate liquid acidity and alkalinity testing. Covering a full 0–14 pH range with 0.01 high resolution, it adopts built-in automatic temperature compensation to eliminate temperature interference and deliver stable, reliable readings instantly.

Equipped with a clear LCD screen and simple one-touch calibration design, beginners can finish calibration effortlessly with standard buffer solutions. Made of lightweight sturdy plastic, its pocket-sized pen shape supports easy carrying for field testing. An auto-shutoff function effectively extends battery life for long-term daily use.

Widely suitable for aquariums, swimming pools, hydroponics, drinking water, wine brewing and school lab experiments. Featuring replaceable electrodes and low maintenance cost, this cost-effective pH measurement tool wins consistent praise from hobbyists, farmers and lab technicians worldwide.