Automatically recognizes pH buffer standards.

• Large LCD dual-line display shows pH and temperature readings simultaneously
• Rugged housing is waterproof, dustproof, and floats in water
• Leakproof cap with fill line functions as a sample/calibration and hydrating cup
• Secure - attach a lanyard to prevent losing or dropping in the field
• Auto shutoff extends battery life
• Two years warranty

NIST and USA buffer recognition.