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EcoSense_pH100M_specsheet.pdf (2.96 MB)
The EcoSense® pH100M handheld instrument provides accurate and repeatable pH, mV, and temperature measurements in an affordable format. Compared to the EcoSense® pH100A, the pH100M features extended memory and simple data transfer with a micro-USB port.


The following pH100M purchase options are available:

601031: pH100M instrument only

601032: pH100M instrument, hard-sided transport case, and pH/Temp field probe with 1 meter cable

601033: pH100M instrument, hard-sided transport case, and pH/Temp field probe with 4 meter cable

Features of the pH100M include:

  • Waterproof micro-USB port for transferring data to PC; no software required
  • Holds 250 data sets; no need to write down data
  • Real-time clock for date/time stamp of saved data
  • User-selectable recalibration prompt provides reminder to calibrate
  • Automatic buffer recognition (US or NIST buffer sets)
  • Auto/Manual temperature compensation
  • IP-67 waterproof housing
  • 1-year instrument warranty; 6-month electrode warranty
  • 1 and 4-meter field cables available; lab pH and ORP electrodes also available
  • Autolock mode holds stable readings on display
  • Low battery indicator with 150 hour battery life
  • Auto shutoff function after 30 minutes of inactivity
  • Displays electrode efficiency

You may be interested in downloading the YSI pH Handbook - a practical guide to pH measurements in the lab and field. It's full of tips and recommendations for ensuring accurate, repeatable pH measurements.



Autolock mode holds stable readings on display

Buffer Recognition

Yes, pH 7.00, 4.01, 10.01 or pH 6.86, 4.00, 9.18

Equipment used with

100-1, 100-4, 110-1, 111-1, 112-1, 115-1, and 130-1 probes

Measurement Method / Channels

1 BNC input for pH or mV; 1 input for temperature

Measurement Range

pH: -2.00 to 16.00 pH units

mV: -1999.9 to 1999.9

Operating Temperature

0 to 50° C (32 to 122 °F)

Parameters Measured

pH, mV (ORP), Temperature

User Calibratable

Yes; 2-point calibration

User Replaceable

Yes, probes can be replaced


1-year instrument, 6-month electrode

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