AZ Instrument pH Pen 8680, 8681, 8682

• Waterproof IP67
• 3 Point Calibration (pH 4, 7 & 10)
• Dual Display Temp. & pH with ATC
• Range: 0-14 (model 8681, 8682); 2-12 (8680)
• Temp. Compensation: 0 to 50°C
• Resolution: 0.1pH (model 8680, 8681)
• Resolution: 0.01pH (model 8682)
• LR44 battery
• Display : LCD, 4 digits