Labnet Prism R Refrigerated Microcentrifuge - Manual (Page 8)

Prism R™ Refrigerated Microcentrifuge 5
3.3. Opening and Closing the Lid
The lid can be opened only when the centrifuge is powered on. Press
button to open the lid.
The lid will be locked automatically when the user presses down the
front edge of the lid.
Note: Do not slam the lid!
3.4. Loading the Rotor
For safety reasons, the rotor must be loaded with centrifuge tubes
symmetrically. The difference in the weight between the tubes should
not exceed 0.1 gram.
The centrifuge tubes should be loaded in pairs opposite each other
and each should contain roughly the equal weight of sample. One or
two additional loaded tubes may need to be added to achieve this.
Please refer Figure 1 to see an example of a properly loaded rotor.
Attention: To reduce air friction and noise, the rotor lid should
be attached to the rotor during centrifugation. Make sure that the
rotor lid snaps securely into place, by pressing down on center
catch.