3nh NR60CP Operation Manual page 22

NR Series Precision Colorimeter
Figure 16 "Delete All Samples" Warning Interface
b) Delete All Records
When select "All Records Delete", all records in the instrument will be
deleted, including all standard records and all sample records. Then,
the instrument will pop up a warning interface, as shown in Figure 17.
Press "Enter" button, all records in the instrument will be deleted.
Note: Please operate this interface carefully, in case of accidental
deletion of the needed historical records.
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