Hach DR/700 Procedures Manual page 46

it about 1/4 inch out from the slot in the front side of the cell holder as in
Figure 8. Push the adapter against the slot sides to seat it. to be sure the
adapter is seated, gently slide it upward. The adapter should stop about
half way up and stay there.
For measurements, leave the adapter in the up position and insert an
AccuVac Ampul in the cell holder (see Figure 9). Taking care to avoid
sharp edges, gently push the ampule down until it stops. This centers
the ampul in the light path. Pushing down on the ampul will not fully
seat it. To remove the ampul, pull the adapter up with the side tabs, then
pull the ampul out.
The adapter should be removed before testing with round sample cells to
allow alignment with the mark on the cells with the tab on the cell
holder. To remove the adapter, tilt the top toward the front of the
instrument and then pull upwards.
Figure 8
Figure 9
Inserting AccuVac Vial Adapter
Inserting AccuVac Ampul
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