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18
2 SETTING THE VOLUME
The counter displays three figures to be read from top to bottom. Additional to the figures on the lower
wheel are printed graduations of 2/10 which facilitate a volume setting in the range of 1/1000 of each
pipette model.
Examples of the meaning of the black and red figures :
PW10
PW20
Pipettes PW2,PW10,PW20:
0
1
red figures = 1/10
7
2
5
red
5
7.5
l
12.50
l
PW100
PW200
Pipettes PW100 and PW200:
0
1
black figures only =
l
7
2
5
5
75
l
125
l
PW1000 PW5000
Pipettes PW1000 and PW5000:
0
red
1
red figures at the top = ml
7
2
5
5
0.75 ml
1.25 ml
The volume of the pipette is set by turning the black knurled adjustment ring, Fig. 1B. To obtain
maximum accuracy and reproducability always change the volume from the high to the lower value :
For decreasing the volume turn the adjustment ring slowly to the required setting, making sure not to
undergo the mark
When increasing the volume turn the adjustment ring until the lower figure wheel comes 1/3 of a turn
above the required setting. Now turn the ring slowly backward until the setting reaches the desired
value. Be sure not to undergo this mark.