Highly Stable and Accurate pH Readings with a Large LCD Display. Designed for Simple, One-Handed Operation.

Automatically calibrates to pH 4, 7, 10 buffers and can be adjusted to recognize non-standard buffers as well. These pH pens offer unbeatable solutions for applications such as waste-water, surface water, aquaculture, hydroponics, pools, and education. They each feature hold function, and auto power off with low battery indicator.

The cases are IP65 waterproof, and will float if accidentally dropped into the water. They come with 4 button-cell batteries and a built-in electrode kept moist with a protective cap.

Item #850050 - Large Display pH Pen
Has a Range of 2 to 12 with an Accuracy of ±0.3 pH and is the perfect instrument for economical spot sampling of pH.

Item #850051 - Large Display ATC pH Pen
Has a Range of 0 to 14 with an Accuracy of ±0.2 pH and is the right instrument for spot sampling of pH and temperature. Displays temperature in both °C and °F.

Item #850052 - Large Display ATC 0.01 pH Pen
Has a Range of 0 to 14 with an Accuracy of ±0.05 pH and is the ideal instrument when you need laboratory accuracy in the field for sampling of pH and temperature. Displays temperature in both °C and °F.

Dimensions: 6½" × 1½" × 1½" (165 × 38 × 38 mm)
Weight: 2.3 oz (65 g)