Metrohm NIRS XDS RapidLiquid Analyzer - Manual (Page 61)

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samples up to the set point temperature. This is located in the Data Collection Method (DCM) as
shown in the next illustration.
The Equilibration Time is measured in seconds. If the Equilibration Time is set for 30 seconds, the
instrument will commence a sample scan 30 seconds after the operator clicks on the “Sample” icon.
The Equilibration Time should be long enough for every sample to reach the desired temperature.
This varies by:
• Sample type (heat capacity)
• Cuvette volume
• Difference between ambient temperature and set point temperature
In practice it is best to check the equilibration time with a temperature probe in the cuvette, to
determine the actual time required. When this is known, enter the value (with some reserve) into the
DCM.
A value entered into the DCM cannot be changed after spectra have been stored using this DCM.
This is to prevent changes in sample acquisition parameters, which could skew results for a given
sample set.
If a different Equilibration Time is necessary, a new DCM must be created. This assures that the
operator is aware of the change, and wishes it to be applied to all subsequent samples acquired
under the new DCM.