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- Range
+ pH: -2.00 to 16.00 pH
+ Temperature: -5.0 to 105.0°C or 23.0 to 221.0°F
- Resolution
+ pH: 0.01 pH
+ Temperature: 0.1°C or 0.1°F
- Accuracy
+ pH ±0.02 pH
+ Temperature ±0.5°C up to 60°C; ±1° up to 105°C or ±1°F up to 140°; ±2°F up to 221°F
Calibration pH: Automatic 1 or 2 points with 2 sets of memorized buffers (4.01, 7.01, 10.01 or 4.01, 6.86, 9.18)
Temperature Compensation: Automatic from -5.0 to 105.0°C (23.0 to 221.0°F)
pH Electrode: HI 1291D with built-in temperature probe (included)
Power Supply: 12 VDC adapter (included)
Battery Type / Life: 1 x 9V battery/500 hours continuous use (without stirrer)
Environment: 0 to 50°C (32 to 122°F) 95% RH
Dimensions: 190 x 105 x 50 mm (7.5 x 4.1 x 1.9”)
Order Information: HI 1291DpH/Temperature probe with DIN
connector and 0.5 m cable
• pH 4.01 & 7.01buffer solutions (20 mL each)
• Plastic beaker
• Electrode holder
• Rubber O-ring
• Magnetic stir bar (HI 208only)
• 12Vdc power adapter
• Instruction manual
