Indexing The Sample Cell - Hach POCKET TURBIDIMETER User Manual

Sample Cell Information
Perform the calibration procedure on page 17 using one sample cell for
both standards or using two sample cells, one for each NTU value.
If two sample cells are used in the calibration and the sample turbidity is
expected to be between 0 and 20 NTU, measure the sample turbidity in
the sample cell which contained the low calibration (1.0 NTU) standard.
If two sample cells are used in the calibration and the sample turbidity is
expected to be between 20 and 400 NTU, measure the sample turbidity in
the sample cell which contained the high calibration (20.0 NTU) standard.

Indexing the Sample Cell

The first time a sample cell is used, make a mark on the upper round
portion of the cell to specify the cell orientation in the sample cell
compartment. Each time the cell is used, insert it in this orientation.
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