YSI pH1200 pH/mV Meter



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  • pH measurement:
    • Range: 0.00 to 14.00 units
    • Accuracy: ±0.01 units
  • mV measurement:
    • Range: -1999 to +1999 mV
    • Accuracy: ±0.05% ±1 digit
  • Temperature measurement:
    • Range: 0.0 to 100°C
    • Accuracy: ±0.2°C
  • Large, backlit display and easy-to-use keypad
  • ATC temperature sensor or manual input
  • 1-, 2- or 3-point calibration with automatic buffer recognition of US or NIST buffers
  • Sensor efficiency check function helps ensure data integrity
  • Autolock mode holds stable readings on the display
  • Single-junction lab grade with built-in temperature or double-junction piercing tip or flat-glass electrodes available
  • BNC, 8 pin DIN connector
  • IP65 water resistant; splash resistant
  • Battery or AC wall power
  • 2-year instrument warranty

The YSI pH1200 is an accurate and reliable instrument for the measurement of pH and mVs. With an IP65 water and splash resistant enclosure, the pH1200 is a bench top unit that provides laboratory-grade measurements.

Featuring a pH range of 0.00 to 14.00 with ±0.01 accuracy and a mV range of -1999 to +1999 mV with ±0.05% ±1 digit accuracy, the pH1200 displays reading on a large, backlit display with an easy-to-use keypad. An autolock feature will hold the readings on the display once they reach stabilization.

The pH1200 utilizes a simple 1-, 2- or 3-point calibration routine with automatic buffer recognition plus a sensor efficiency function to ensure the most accurate data. The instrument is compatible with a range of lab grade electrodes that are available separately. The unit can be powered by batteries or through AC power with the included 115/230 AC adapter.


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pH/mV electrode with BNC connector and 1-meter cable
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pH/ATC temperature combination electrode with BNC connector and 1-meter cable
YSI 111 EcoSense Piercing pH Sensor
Double-junction, piercing tipped pH sensor with 1-meter cable
YSI 112 EcoSense Flat Glass pH Sensor
Double-junction, flat glass pH sensor with 1-meter cable


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Full range of calibration solutions and standards for YSI analytical meters
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