10 – VWR STandaRd Line PiPeTTORS
instruction Manual – 11
5,000 and 10,000 μL pipettors
L +5mm
1. Tip ejector disassembly
•
Remove the tip ejector pushbutton.
•
Using a screwdriver, turn the metal arbor counter-
clockwise to unscrew the ejector from the arbor.
•
Release the ejector.
2. Tip ejector assembly
•
Remove the tip ejector pushbutton.
•
Using a screwdriver, turn the metal arbor clockwise
to secure the ejector and adjust its length.
NOTE:
Leave a space of at least 1 mm between
the shaft and tip ejector collar.
3. Tip ejector adjustment
•
Remove the ejector pushbutton.
•
Use the screwdriver to increase or decrease the
ejector length.
•
Following ejector assembly or adjustment, ensure
the ejector pushbutton is relocated.
if the tip ejector cannot be adjusted sufficiently, or if the
diameter of the ejector is insufficient to eject the tip, it
may be necessary to attach the ejector cap “
M
” to the
ejector.
in 2 and 10 μL pipettors place the cap, that can be
purchased separately, on the bottom of the pipettor
shaft and slide the cap upwards to the bottom of the
tip ejector.
M
L
10000μL: L +
10mm
5000μL: L +6mm
M
Volume Setting
aspiration volume can be set by
either turning the pipetting pushbut-
ton knob, or the adjustment knob.
The volume setting is displayed as
a three digit counter, which should
be read from top to bottom. The
smallest volume increment is printed
on the bottom counter drum.
Examples of counter indications
The decimal point in
the volume of aspi-
rated liquid (μL or mL)
is indicated by change
in color of digits.
Black digits represent
integer numbers, and
red digits represent
decimal fractions
(up to 20 μL).
1
2
5
0
3
5
0
7
5
Volume Ranges
0.1-2 μL
5-50 μL
100-1,000 μL
Set Volume
1.25 μL
35 μL
750 μL (0.75 mL)
Increment
0.002 μL
0.2 μL
2.0 μL
For maximum accuracy, the set volume must be
approached from a higher value by decreasing counter
readings. Before reaching the desired value, reduce the
speed of turning the adjustment knob to avoid inadver-
tently exceeding the desired value.
