I have been doing some testing with my Hach DR2800 and the screen showed a message E1 after the blank vial is this an error message – what does this mean?
There are a number of tests in the Hach LCK cuvette range that require a blank vial to be tested prior to running a sample. The value E1 on screen indicates that this value is to be subtracted from the final reading. This will also appear with some tests where the value is measured before and after the sample addition.
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