PH50: Waterproof pH Pen

Features:

• pH range: 2 to 12pH
• LCD displays pH eadings
• Easy to calibrate single CAL key with automatic pH buffer recognition (4, 7, and 10pH)
• Choice of 3 point calibration for better accuracy
• Data hold freezes reading on display
• Low battery indicator, Auto power off
• Complete with built in electrode, sensor cap, inner pH electrode protection cap, and 4 LR44 button batteries