HI 207 is an all-in-one pH meter designed to meet the classroom environment with features such as a built-in beaker holder, beaker-top electrode holder and 3-in-1 pH and temperature sensor. This instrument also features an extended pH range of -2.00 to 16.00, dual-level LCD with icons for stability and buffer recognition, automatic pH calibration with 2 sets of memorized buffers, Celsius or Fahrenheit temperature range and automatic temperature compensation. In the classroom, this compact unit reduces clutter and utilizes a minimal amount of space on the desktop.

Switch to battery power and the instrument can be taken outside the classroom for field studies. The unit's small footprint enables HI 207 to be used in places usually not suitable for large, multi-unit set-ups. When lab time is over, the instruments are easily cleaned and can be placed out of the way - right away. HI 207 operates on either the 12 Vdc adapter or batteries.

• Range:  pH:  -2.00 to 16.00 pH
• Range:  Temperature:  -5.0 to 105.0°C or 23.0 to 221.0°F
• Resolution:  pH:  0.01 pH
• Resolution:  Temperature:  0.1°C or 0.1°F
• Accuracy:  pH:  ±0.02 pH
• Accuracy:  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

HI 207 is supplied with HI 1291D pH electrode with built-in temperature sensor, plastic beaker, pH electrode holder, calibration solutions, 12 Vdc power supply, 9V battery and instructions.