8 – VWR STandaRd Line PiPeTTORS
instruction Manual – 9
The design of the pipettor enables the user to reca-
librate it according to the information presented in
Section 9.
6. Pipettor Operation
Attaching the Tips
•
attach the correct tip corresponding to the model
number displayed on the pipettor pushbutton
(Section 5).
•
Position the pipettor vertically when attaching tips.
•
Single-channel pipettors: Push the pipet tip on firmly
using a slight twisting motion to ensure an airtight
seal.
•
Multi-channel pipettors: Press the pipettor against the
tips positioned in the rack box until the shaft retracts
approximately 1.5 mm into the manifold. The suspen-
sion system ensures even and airtight sealing of the
pipet tips. The rocking motion does not have to be
performed to seal the pipet tips tightly.
NOTE:
•
do not attach the tips with a rocking movement,
as this may damage the shaft or plunger. Observe this
rule particularly with single-channel pipettors of low
volume range.
•
never draw liquids directly into the pipettor without
the tip attached.
Adjusting the tip ejector
The tip ejector can be adjusted by the user and can
accommodate most types of tips available on the mar-
ket. When using narrow tubes, it may be necessary to
remove the tip ejector.
2-1,000 μL pipettors
1.
2.
3.
1. Tip ejector disassembly
•
Press the tip ejector pushbutton.
•
Turn the metal tip ejector 1/3 turn counter-clockwise.
•
Slide the ejector from the plastic arbor.
2. Tip ejector assembly
•
Press the tip ejector pushbutton.
•
Line the metal tip ejector up with the plastic arbor.
•
Turn the metal tip ejector clockwise until it has fully
latched.
3. Tip ejector adjustment
•
Remove the tip ejector pushbutton.
•
To increase the ejector length turn the plastic bush
counter-clockwise.
•
To decrease the ejector length turn the plastic bush
clockwise.
