Manual titrations are time consuming and can be inaccurate at times due to human error. Not to mention, important data can get easily lost due to improper tracking methods. The Thermo Scientific Orion Star T900 Series Automated Titrators are designed to make performing titrations easier, more reliable, and more reproducible than manual titrations.

These auto titrators expand the number of ions and compounds that can be measured beyond direct electrode analysis and offer dynamic process controls that adjust the titration to optimize analysis results.

Browse our complete portfolio or let one of our experts help you make a selection.

Automated vs. Manual Titration

Manual titration can be a time consuming and frustrating process. Watch how easy it is to find the endpoint, reproduce your workflow, and optimize your results. The auto-filling burette helps to minimize the handling of corrosive materials. Use of an auto titrator well help ensure a safer, more efficient lab. 

Durable titrators with a rugged design

Orion Star T900 Series Automated Titration Applications

Streamline your manual titration workflows and increase efficiency and repeatability with an Orion Star T900 Series Automated Titrator. Review the applications chart below to find out if an auto titrator is for you.

Experience dependable titration performance for the following applications:

  ✓ Acid/Base titrations
  ✓Argentometric titrations
  ✓Redox titrations
  ✓Complexometric titrations
  ✓Precipitation titrations
  ✓Single titrant titrations
  ✓MKA titration for sodium
  ✓Automatic data logging
  ✓Data transfer via USB stick
  ✓Converting manual to automatic titrations

We are currently unable to offer solutions for Karl Fischer, amperometric, stat, and dead stop titrations. For other questions please contact customer support to be connected to your local sales representative.


Best practices your titration applications

Get our top 10 tips for performing automated titrations, and methodologies for common uses of an auto titrator. Discover how to perform an acid/base titration for orange juice, water and petroleum in this ebook.

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Three reasons why its time to stop performing manual titrations

Performing manual titrations can be extremely tedious, requiring the operator to stand in one place, watching minuscule droplets drip into a sample container and diligently waiting for the color change or other endpoint indictor to occur before starting the process all over again, for possibly hours and hours of repeated sample titrations.

An automatic titrator allows you to start the titration and then walk away from the titrator to perform other tasks or tests while the titrator takes care of the titrant addition, endpoint detection and results calculations automatically without any involvement from the operator.

Once the titrator is done, the titrator will beep, notifying the operator that the results are available and another titration can be started.

Manual titrations typically use a non-certified, Class B or Class A burette with stopcock to add doses of titrant to the sample. The operator uses the stopcock to start and stop the additions of titrant into the sample, often one drop at a time, until the endpoint is reached.

The precision of these additions, especially near the endpoint, is primarily determined by the operator’s skill level, experience and focus on the task at hand. All too commonly, an operator can allow too much titrant to flow out of the burette into the sample and overshoot the endpoint, requiring them to perform the entire titration all over again. Even highly skilled and experienced operators can be limited in the precision of their manual titration results by the last few drops of titrant, since each drop can vary in volume.

When using an automatic titrator, the titration is performed using a high-accuracy titrant delivery system that controls all titrant additions into the sample and will adjust the dose rate as it detects the endpoint approaching.

Once the endpoint is reached, the titrator uses the precisely measured volume of titrant added to the sample to automatically calculate the concentration results for the sample. The operator’s skill level, experience and focus on the task at hand is no longer a factor in the overall accuracy of the titration results and the possibility of missing the endpoint is greatly reduced.

Typically calculating titrations in the lab is done by calculating the sample concentration after the endpoint has been reached. There are many points in this calculation where human error can get in the way of consistent, reproducible results.

When using an auto titrator, it will automatically calculate the sample concentration from the entered parameters. Plus, on the automatic titrator, electrode, titrant and titration setup parameters can be saved as a method, so the exact same settings are used for each titration. These methods can be transferred between titrators for consistent procedures to be used on multiple titrators or multiple labs. This way you can save time with repeat titrations by running the exact same parameters each time without having to reenter any information.

Instead of manually logging the titration results in a notebook or scrap of paper, an auto titrator will automatically save the titration results in the data log with time and date stamp.

Available Orion Star T900 Series Titrators


T910 pH Titrator

T920 Redox Titrator

T930 Ion Titrator

T940 All-in-One Titrator

 Shop nowShop nowShop nowShop now
Direct measure modespHRedoxIon Selective Electrode (ISE)
pH, Redox, ISE
Calibration modes1 to 5 point pH1 point relative mV1 to 5 point ISE1 to 5 point pH, 1 point relative mV, 1 to 5 point ISE
Multiple known addition points (MKA)_Up to 5Up to 5
Titration technique

Equivalence point (1 or 2) or present endpoint (1, 2 or 3)

Titration typesDirect or back titration
Blank optionsFixed value or variable value using titration
Cycles per titration runUp to 5 (option to exclude results from avg & RSD calculations)
Titrant determinationStandardization titration or manual concentration input
Titration process controlRoutine, quick, careful, or user defined
Titration precision±0.5% RSD, dependent on environment and handling conditions
Sample applicationsAll-in-one titrator for flexible pH, redox and ion concentration titrations.
Available electrodespH electrodesRedox electrodesISE electrodespH electrodes, Redox electrodes, ISE electrodes

   Orion Star T900 Series Titrator Accessories

  • Enhance productivity for your titrator with our Orion titrator accessories
  • Designed to expand titrator functionality and minimize maintenance!

Find accessories

Orion Star T900 Titrator Accessories

Request a consultation

Get answers to your top water analysis and water purification questions and see products in action. Learn about:

·  pH & Multiparameter Benchtop & Portable Meters
·  Electrodes (pH Electrodes, ISE, Conductivity, DO)
·  Potentiometric Titrators
·  Spectrophotometers
·  Water Purification Systems

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Using your Orion Star Titrator

These videos will guide you through the use of your titrator from set up to application support.

Quick Start GUide Instructions: Orion Star T900 Titrator

Video: Total alkalinity in water by automatic titration


Knowledge Base: Certificates of Analysis and SDS for Orion, ROSS, AQUAfast, AquaMate, and AquaSensors products.

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