Metrohm 900 Touch Control Manual - Manual (Page 219)

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22 Determination run
900 Touch Control
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22 Determination run
This chapter provides a description of how to carry out a determination,
i.e. how to process a single sample or a sample series. The current sample
data is used for calculations.
22.1 Carrying out a single determination
When you carry out a determination, you can enter the sample data in
various ways (see Chapter 20, page 192). The following instructions
describe how to enter the sample data in the main dialog.
To carry out a single determination, proceed as follows:
1 Load the method
￭ See Chapter "Loading a method", Page 167.
2 Prepare the sample
NOTE
Calculate the amount of the sample in such a way that a titrant
consumption of 10…90 % of the cylinder volume will result.
￭ Weigh in or measure the sample in a sample vessel.
￭ Add solvent.
￭ Place the sample vessel on the stirrer.
￭ Immerse the electrode and buret tip in the solution.
3 Enter the sample size
￭ In the main dialog, tap on the input field Sample size.
The number editor opens.
￭ Enter the sample size and confirm with [OK].
4 Start the determination
￭ Tap on the fixed key [ ].