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Thermo Scientific 1112000 3-star benchtop pH meter, 115/220 VAC

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Thermo Scientific Mfr # 1112000 – Item # EW-58823-02
Meters you can count on to deliver accurate, reliable data
  • Improved 3-Star meters are ideal for labs with strict calibration, measurement, and datalogging requirements


Specifications & Description

  • Meter TypeBenchtop
  • Display typeLCD
  • Min pH (pH)-2
  • Max pH (pH)20
  • pH Resolution0.001/0.01/0.1
  • pH Accuracy±0.002 pH
  • Buffer RecognitionDIN, NIST, USA, and custom
  • CalibrationUp to 5 points
  • Min mV (mV)-1999
  • Max mV (mV)1999
  • mV Resolution0.1 mV
  • mV Accuracy±0.2 mV or 0.05%, whichever is greater
  • Temperature compensationAutomatic or manual
  • WaterproofYes
  • Width (cm)16.8275
  • Height (cm)9.525
  • Width (in)6
  • Description3-star benchtop pH meter, 115/220 VAC

Key Features

  • Improved 3-Star meters are ideal for labs with strict calibration, measurement, and datalogging requirements

More About this Item

3-Star meters now include an improved stability algorithm to increase calibration and measurement accuracy. Meters can now be paired with auto-samplers for increased sample throughput. Increased memory allows you to log more data points and even turn off the data log if desired. Improved security is offered by new individual methods passwords. Temperature accuracy can be ensured with the ATC temperature calibration feature.

All Orion Star Series meters include a convenient Quick-Start guide to help you get started and provide support while in use. Smart Stability™ and Smart Averaging™ ensure accurate results. GLP-related features including datalogging with time/date stamp and electrode verification. Meters feature automatic or manual pH calibration, auto-buiffer recognition, advanced self-tests and self-diagnostics, and RS-232 or optional USB connectivity.

3-Star meter only includes: Quick-Start guide and AC power supply.

3-Star meter kit adds: ROSS Ultra® Triode™ pH/ATC electrode, buffers (pH 4.01, 7.00, and 10.00), pH electrode storage solution, and benchtop electrode stand.




Do you have questions about this product?

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3 Questions | 3 Answers
Displaying questions 1-3
  • Q:

    In relation to my last question; I tried using the Data log and it printed off fine. However, when I took the measurement the slope result at the bottom I.e. Where my sample result is, is different to the slope I used to calibrate the meter in the morning. For example, calibrated between 4-7 and slope was 98.7. When I returned in the evening, retrieved calibration from logger and measured the sample my slope was 99.4. Is this ok? Someone could have used the meter after me in the morning, but if I picked my own calibration I presumed this would be OK?
    Asked on 5/21/2016 by SB

    1 answer



      A slope between 95-101% is considered very good.

      Answered on 5/23/2016 by Danielle from Technical Support
  • Q:

    Hi, my query is regarding calibration of orion 3 star ph meter. we generally use 3point calibration,after completion of calibration,slope was with in limits and display shows man 4 7 only without 10. we are doing 4,7,10 buffers for calibration.why this was appearing, can u pls say why the display is so.
    Asked on 2/10/2016 by Dasaradh

    1 answer



      Please try resetting your unit:
      Disconnect all probes and use the black cap (hangs off the back) to seal the BNC port prior to this procedure.
      Turn the meter off and then back on.
      While the meter is restarting you will see the software version displayed (it only displays for a few seconds). You must hit the "Cal" key while the software screen is showing.
      The meter will then ask you to press the "Measure" key, hold the button down until you hear the meter beep.
      The meter will automatically reset itself once it has cleared and go into measurement mode. You may now reconnect the probes.
      If this doesn't work, please contact us for further troubleshooting.

      Answered on 2/11/2016 by Jen from Technical Support
  • Q:

    Can this model be connected to the computer for data logging? if yes, how it can be connected and what software can be used?
    Asked on 7/11/2011 by Rehab from UK

    1 answer



      Yes, there is an RS-232 port on the meter that will allow you to connect to a computer. The cables are available in the accessories section of the web page. This will download the stored data into an Excel spreadsheet.

      Answered on 7/12/2011 by Mike from Tech Support
Displaying questions 1-3

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