pH and ATC Pens, Large Display, Sper Scientific

Easy to carry, simple to operate and sufficient for most field pH tests.

Highly stable and accurate readings with a large LCD display. Designed for simple one-hand operation. Automatically calibrates to pH 4, 7, 10 buffers and can be adjusted to recognize non-standard buffers as well. Features hold function, and auto power off with low battery indicator. The case is IP65 waterproof, and will float if accidentally dropped into the water.

 : Comes with 4 button-cell batteries and a built-in electrode kept moist with a protective cap. 1 year warranty.