This portable digital PH tester pen delivers accurate water pH testing with a full 0.00–14.00 measuring range, built-in temperature detection working from 0℃ to 60℃. Equipped with a high-efficiency sensitive electrode bulb, it achieves fast response and stable, reliable readings. Featuring one-touch auto CAL calibration design, it’s effortless to calibrate and operate for beginners.

Widely applicable for multiple scenarios: test drinking water, fish tanks, swimming pools, farm irrigation water, lab samples and sewage. Ideal for aquaculture use to monitor pond water pH and avoid fish death from unbalanced water quality. Compact pen-shaped design for easy carrying, digital clear screen shows real-time data. Compact, durable and cost-effective, it’s an essential water quality monitor to safeguard family drinking water hygiene and support gardening, farming & laboratory daily testing.