The Hanna HI98127 pHep4  lightweight,sleek tester is accurate to 0.1 pH with a built-in thermometer to automatically adjust the pH reading for temperature. The waterproof design (it floats), simple operation, and replaceable electrode mean that you can rely on this meter for years.  The large LCD display shows both pH and temperature readings simultaneously, while a stability indicator is displayed to alert you when a stable reading has been obtained.

• Extend the life of your pH tester with a replaceable electrode.
• Automatic calibration for accurate pH readings every time.
• Great for environmental, field, and laboratory testing.