Eppendorf XplorerPlus Adjustment - Manual (Page 5)

General information on adjustment
Eppendorf Xplorer ® /Xplorer ® plus
English (EN)
5
1 General information on adjustment
The piston stroke of Xplorer pipettes can be changed using the Adjustment option. This document provides
information on when the Factory settings adjustment should be replaced by a different adjustment and what
items need to be observed during this process. A selected adjustment can be changed again at any time.
The adjustment can also be reset
Factory settings at any time.
If the Xplorer adjustment Factory settings is not valid, this will be indicated using the symbol at the top
left of the header of the display.
The Xplorer pipette was calibrated before delivery and tested with double distilled water according to ISO
8655.
Changing the adjustment of the Xplorer pipette is sometimes recommended for solutions with a density,
viscosity, surface tension and/or vapor pressure that vary greatly from that of water If the density of an
aqueous solution changes by approximately ±10%, e.g., due to the salt concentration, the volume changes
by approximately ±0.2%. This statement does not apply if other relevant properties of the liquid also
change.
If the pipette is used at extremely high altitudes, it must be calibrated to the ambient air pressure. At
1
000 m above sea level, the volume error of a 100 μL pipette is about –0.3%.
Changing the adjustment can improve the dispensing accuracy (systematic error) when using tips that have
a very different geometry than standard tips.
You can cancel a modified adjustment using simple steps.
Changes to the adjustment do not affect the precision (random error) of the dispensing. The precision
(random error) can be improved by replacing worn parts. Furthermore, handling has a strong influence on
the precision (random error).
This operating manual applies to devices with software version 2.01.00 or higher.
NOTICE! Incorrect dispensing volume with special liquids and from temperature
differences.
Solutions which differ greatly from water in terms of their physical data, or temperature
differences between the pipette, pipette tip and liquid, can result in incorrect dispensing
volumes.
 Avoid temperature differences between pipette, pipette tip and liquid.
 Check the dispensing volume and make sure that you can affirm all the questions listed in
the general information.
The random and systematic errors determined before delivery can be found in the enclosed
Eppendorf Certificate. If the factory settings are superseded by a different adjustment, the
Eppendorf Certificate is no longer valid. If you reset the adjustment to the factory settings,
the random and systematic errors determined before delivery and the enclosed
Eppendorf
Certificate are once again valid.