Bench Top pH Meter PHS-3E, 0.01 Class Accuracy (CAT#: STEM-AL2-2361-ZJF)

The bench top pH meter measures the pH value of a solution together with its temperature or redox potential. A combination electrode is immersed in the sample, and the potential developed between the glass and reference elements depends on hydrogen ion activity. That potential is amplified and converted into the reading shown on the display. Calibration at two points fixes the slope and offset of the electrode against standard buffers. Temperature compensation can be automatic through the supplied probe or set manually where the sample temperature is known. The backlit dual line display shows the pH value together with either temperature or millivolts, so both are visible at once. Electrical connectors sit below the plane of the case, which keeps spilled liquid away from the contacts. Typical users include university and college laboratories, food factories, pharmaceutical plants and water works. The instrument is supplied with electrode, buffers and temperature sensor, so it is ready for use after calibration.

Instrument class: 0.01 class
Measuring ranges: pH from -2.00 to 18.00
mV from -1999 to 0 and 0 to 1999
temperature from 0 to 99.9 deg C
Resolution: 0.01 pH, 1 mV, 0.1 deg C
Basic error: plus or minus 0.01 pH plus or minus one digit
plus or minus 1 mV plus or minus one digit
plus or minus 0.3 deg C plus or minus one digit
Input impedance: 1 x 10 to the power of 12 ohm
Stability: plus or minus 0.01 pH plus or minus one digit over 3 h
Temperature compensation range: 0 to 100 deg C, manual or automatic
Dimensions: 300 x 220 x 90 mm
Weight: 1.5 kg
Configuration: one pH combination electrode, two sets of pH standard buffer reagent, one automatic temperature compensation electrode
Two point calibration
Manual and automatic temperature compensation
Large screen blue backlit dual line liquid crystal display
Simultaneous display of pH with temperature or mV
Electrical connectors set below the surface plane for corrosion protection

Dual line backlit display showing pH together with temperature or mV
Manual and automatic temperature compensation selectable by the user
Two point calibration procedure
Connectors recessed below the plane of the instrument for safety
Supplied complete with electrode, buffers and temperature electrode
Wide pH and mV ranges covering routine and extended work