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2.5.4 Using the 13-mm Test Tube Adapter
This test tube adapter is placed in the instrument cell holder with the
orientation mark to the right (see Figure 7, Installing the Test Tube
Adapter). Proper placement is necessary to match the left-to-right light
path. Because of the height of the test tube, the adapter comes with its
own light shield cap that must be in place when readings are taken. The
cell compartment cover remains open.
Figure 7
Installing the Test Tube Adapter