10
Accuracy (of one channel)
Enter value into the test record
►
Coefficient of variation (for one channel)
Enter value into the test record
►
V – V
0
V
0
A [%] =
· 100
100 s
V
CV [%] =
Comparison actual values - nominal values (per channel)
Error limits: see tables 7.2.1 and 7.2.2 (for multichannel pipettes see tables 7.3.1 and 7.3.2)
Result
If the calculated values for A [%] and CV [%] are (for multichannel pipettes per channel) smaller than
or equal to the error limits, the pipette is in good working order.
If the calculated values are
larger
than the error limits:
Verify, if all above instructions have been carefully followed step by step
►
Observe notes from the „Troubleshooting“ section in the operating manual
►
►
Recalibrate the VITLAB micropipette according to the steps in the operating manual
®
If these measures are not successful, we recommend you to make use of the VITLAB calibration service.
Possible volume errors and the resulting measures:
Error
Possible causes
Measures
Volume too small
Pipette tip not properly
attached
►
Use a new pipette tip and attach
it tightly
Volume too large
Pushed pipetting button too
►
Be very vigilant to not press be-
Seal or piston damaged
►
Clean or replace seal resp. piston
(see operating manual)
V- / O-rings damaged
Replace V- / O-rings
►
Other influences
Pipette is not correctly calibrated
►
Recalibrate pipette
yond the first stop
Multichannel pipettes:
Temperature adjustment of the
►
Carry out temperature adjust-
device, room and water temper-
ature was not completed
or definition of individual error limits.
far
ment
