Hach Portable Spectrophotometer DR 2800 - Manual (Page 16)

16
Installation
3.5.3 Use of the light shield for measurements
The light shield ( Figure 6 on page 17 ) prevents light interference
when using 13 mm and 16 mm vial tests and must be in place
before measurements can be taken in cell compartment #1. The
light shield is required only when using 13 mm or 16 mm vial tests.
Figure 5 Installation of a cuvette/sample cell adapter