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BIOTIX COBRA PIPETTE
11 - LEAK TEST
This test may be performed at any
time to check that the pipette does
not leak, especially after perform-
ing a maintenance or sterilization
procedure. If a pipette fails this
test, replace the O-ring and seal.
After making sure that the pipette
is correctly reassembled, repeat
this test.
For the 2µl to 200µl Single channel models:
Fit Pipette Tips.
Set the pipette to the maximum volume given in the
specifications, and pre-rinse.
Aspirate the set volume from a beaker of distilled
water.
Maintain the pipette in the vertical position and wait
for 20 seconds.
If a water droplet appears at the end of the tip there
is a leak.
If you see no droplet, re-immerse the tip below the
surface of water.
The water level inside the tip should remain constant;
if the level goes down there is a leak.
For the 1000µl, 5000µl and 10mL Single channel
models:
Fit Pipette Tips.
Set the pipette to the maximum volume given in the
specifications.
Aspirate the set volume from a beaker of distilled
water.
Maintain the pipette in the vertical position and wait
for 20 seconds.
If a water droplet appears at the end of the tip, there
is a leak.
14
FIGURE 14
no leak
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