Test Tube pH Pens

Highly stable and accurate readings with a large LCD display. Designed for simple one-hand operation. Automatically calibrates to pH 4, 7 and 10 buffers and can be adjusted to recognize some other 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 2 button-cell batteries and a built-in electrode kept moist with a protective cap and included solution. Fits standard test tubes 16 x 50 mm or larger.

Specifications:

• Resolution: 0.01
• Auto 3pt calibration
• IP65 waterproof
• Low battery indicator
• Auto power off
• Auto buffer recognition
• Auto compensation (excluding 897-769-11)
• C° and F° display (excluding 897-769-11)