Sper Scientific 850063 LCD Test Tube ATC pH Pen, ±0.1 Measuring Accuracy auspowers_batchsix Freely rotate and height adjustment

Freely rotate and height adjustment of the tip for the comfort of your ear canals

Five popular colors for easy identification and color coding

It has passed various strict reliability tests

360-degree adjustable head and kickstand

Sper Scientific 850063 LCD Test Tube ATC pH Pen, ±0.1 Measuring Accuracy auspowers_batchsix Freely rotate and height adjustmentSper Scientific 850063 LCD Test Tube ATC pH Pen, 0. 1 Measuring Accuracy 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 any other 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 2