Eppendorf Pipette Reference 2 - Manual (Page 21)

Maintenance
Eppendorf Reference ® 2
English (EN)
21
6.2.2 Disinfection
 Carefully wipe off the outer surfaces with disinfectant, DNA/RNA decontamination agents or 70 %
isopropanol.
 You can wipe the outside of the tip cone and the ejector sleeve using a sodium hypochlorite solution of
4 %.
 After the exposure time of the sodium hypochlorite solution (15 minutes) has elapsed, thoroughly
remove it using demineralized water.
The Reference 2 pipettes may be temporarily subjected to the UV light of a sterile bench (≥ 254 nm).
6.3 Replacing O-rings
The 100 μL and 300 μL multi-channel lower parts are equipped with O-rings. These are wear parts. Replace
old, worn or damaged O-rings. Defective O-rings result in the incorrect positioning of the tips and in
dispensing errors.
6.3.1 Removing the O-ring
6.3.2 Mounting a new O-ring
1. Fit the mounting aid (shortened pipette tip, included in the delivery package of the O-rings) on the tip
cone.
2. Push the new O-ring over the tip onto the tip cone.
3. Check that the pipette tips are correctly positioned. Ensure that the tips are tightly sealed and properly
aligned.
1. Switch off the spring loading.
2. Push the opening of the O-ring tool (included in
the delivery package) against the tip cone from
the side so that the sharp edge in the opening of
the O-ring tool is positioned on top of the o-ring.
Do not slide the O-ring tool onto the cone!
3. Supporting the O-ring tool with your thumb, push
it firmly against the tip cone.
This O-ring is cut in one place.
4. Remove the O-ring tool and the O-ring from the
tip cone.