• Waterproof
• Auto-Temp Compensation (8681 & 8682 only)
• One-Touch Auto-Calibration
• Up to 3 point cal 4,7,10
• Cal values adjustable
• Data Hold Function
• Auto Power-Off
• °C/°F Switchable (8681 & 8682 only)

These convenient and portable pen-style pH meters are designed for fast and accurate pH measurements in any environment. Choose from three models to fit your application. Each unit includes a one-touch calibration feature at 3 points and a waterproof rating to IP65. They fit comfortably in your hand and conveniently store away in your shirt pocket.

8680—Simple to use and waterproof. Includes data hold, one-touch auto-calibration at 4, 7, and 10 pH, and auto power-off.

8681—Choose this model for professional performance, durability and a great price. Auto temperature compensation ensures good accuracy. Dual display shows temperature and pH at the same time with accuracy to ±0.2pH.

8682—Easily your best value in a pocket-sized, waterproof pH pen with high precision. Auto temperature compensation with excellent accuracy. Dual display shows temperature and pH at the same time with accuracy to ±0.05pH.

Specifications	8680	8681	8682
Accuracy	±0.3pH	±0.2pH	±0.05pH
Range	2.0 to 12.0 pH	0 to 14 pH	2.0 to 12.0 pH
Resolution	0.1 pH	0.1 pH	0.01 pH
Temperature Accuracy	-	±1°C	±0.5°C
Temperature Resolution	-	0.5°C / 0.5°F	0.1°C / 0.1°F
Ambient Operating	0 to 50°C 0 to 80% RH	0 to 50°C 0 to 80% RH	0 to 50°C 0 to 80% RH
Automatic Temperature Compensation	0 to 50°C
Dimensions	1.42 (W) x 6.3 (H) x 0.89 (D) inches
Batteries	Button Cell LR144 x 4
Waterproof Rating	IP65
User Manual	Click to download PDF