Thermo Fisher Orion Star T900 Series pH Titrator Star Instruction Manual
- June 13, 2024
- Thermo Fisher
Table of Contents
Orion Star T900 Series pH Titrator Star
Titration Mode
There are several ways to start a sample titration on the titrator, use the way that works best for your workflow.
- Press the “Repeat Last Titration” button on the home screen to perform a titration using the last used set of electrode, titrant and titration setup parameters, which can be helpful when performing the same titration over and over again
- To run a different titration using a saved method, press the “Use a Saved Method” button on the home screen to access the list of saved methods and then tap the desired method from the list.
- To enter a new set of electrode, titrant and titration parameters to run a new titration, press the “Start a New Titration” button on the home screen. See the Titration Setup Wizard section for instructions.
Once you have selected the method to start a sample titration, use the following procedure:
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Before starting the titration, the titrator will display the pre-check screen. Prepare the sample and place the sample beaker under the electrode holder with the sensing electrode(s), stirrer probe and dispenser probe all immersed in the sample.
a. It is recommended that the stirrer probe be slightly below the dispenser probe and the same height as the sensing electrode(s).
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Press the “Start Titration” button.
Note: The titrator will immediately start dispensing titrant and taking readings, so the electrode, stirrer probe and dispenser probe must be in the sample beaker before pressing the “Start Titration” button.
a. If manual sample entry is selected, a popup box will be displayed prompting you to enter the sample ID. Enter the ID using the alphanumeric keypad, press the “Save” button and then the titrator will start the titration.
b. If variable weight or variable volume is selected for the sample amount, the titrator will display a popup box prompting you to enter the sample amount value. Enter the value using the numeric keypad, press the “Save-Run” button and then the titrator will start the titration.
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When the titration is started, the titrator will display the active measurements above the graph and the graph will update as the titration progresses.
Note: Press and hold the “Stirrer” icon at any time during the titration to adjust the stirrer probe speed. -
The titrator will continue to dispense titrant, take readings and analyze the data until it determines that the endpoint criteria have been met.
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When the titration is complete, the titrator will display “STOPPED” and the calculated concentration and volume consumed during the titration will be shown on the right of the screen.
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