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Thermo Scientific Orion 4-star benchtop pH/ISE meter, 115/220V

Thermo Scientific Orion  |   Item# EW-58823-04

$1,195.00 USD/EACH


  • Redesigned meters feature auto-sampler compatibility, improved accuracy, additional security, and datalog capabilities, additional temperature calibrations, and many more new functions!
  • Improved 4-Star meters are ideal for labs with strict calibration, measurement, and datalogging requirements
  • Available 21 CFR Part 11 software for FDA regulatory compliance (order separately to the right)
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-buffer recognition, advanced self-tests and selfdiagnostics,
and RS-232 or optional USB connectivity.

These 4-Star benchtop meters now include an improved stability algorithm to increase calibration and measurement accuracy. Meters can now be paired with autosamplers 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.

Meters include: Quick-Start guide and universal power supply.

Meter kits add: ROSS Ultra® pH electrode, epoxy ATC probe, buffers (one 475-mL bottle each of pH 4.01, 7.00, and 10.00), pH electrode storage solution, and benchtop electrode stand.
Product Type Multiparameter Meter
Meter style Benchtop
Range (pH) - 2.000 to 20.000
Range (mV) +/- 1999
Range (ISE) 0 ppm to 19,990
Range (Temperature °C) -5.0 to 105.0
Resolution (pH) 0.1/0.01/0.001
Resolution (Temperature) 0.1 C
Resolution (mV) 0.1
Resolution (ISE) 3 significant digits
Accuracy (pH) +/- 0.002 pH
Accuracy (Temperature) +/- 0.1 C
Accuracy (mV) +/- 0.2 mV or 0.05%, whichever is greater
Temperature compensation Automatic or manual
Display LCD
Interface USB or RS232
Calibration Up to 5 points
Waterproof Yes
Buffer recognition USA, NIST, DIN, Custom
Power Universal power adapter (included) or 4 AA batteries (sold separately), 2000 hrs operation
Datalogging (points) 750
CE Compliance Yes
Brand Thermo Scientific Orion
Dimensions (" W) 6-5/8
Dimensions (" H) 3-3/4
Dimensions (" L) 9-1/4


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Questions and Answers

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

    We have purchased an orion 4-star benchtop ISE/pH metre. ca we use a cable with cat. no. 1010004 to connect the meter with a computer?
    Asked on 10/19/2011 by Ishfaq

    1 answer

    • Staff Reviewer


      Yes, our part number for that cable is 58822-40. The meter accepts ASCII commands, for directions and a list of acceptable commands please email or call to request the programming manual.

      Answered on 10/21/2011 by Jen from Technical Support
  • Q:

    I am looking for ISEs that can determine the ions of K, F in aqueous and alkaline solutions using our existing Thermo Scientific Orion 4-star benchtop pH/ISE and Thermo Scientific Orion 4-star benchtop pH/ISE meters.
    Asked on 2/11/2011 by AO

    1 answer

    • Staff Reviewer


      The Orion 4-star meter will accept ISEs with BNC connections. Please see part numbers 27504-26 or 27502-39 for the potassium ion probe, and 27504-14 pr 27502-19 for the fluoride ion probe.

      Answered on 2/16/2011 by Jen from Technical Support
  • Q:

    Please suggest a compatible calcium and potassium selective electrodes that measures up to nanomolar range
    Asked on 11/20/2010 by YungLab from Memphis TN

    1 answer



      For a calcium Ion selective electrode, we do not currently carry a product that will read down to the nanomolar range (10^-9 M). For potassium, see part number: 58824-56. Additional standards, fill solutions will also be necessary for calibration. Please contact our technical application specialists for additional assistance (contact information can be found in the "contact us" section on the web page).

      Answered on 11/23/2010 by Jack from Technical Support
Displaying questions 1-3

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