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6.
Calculate the F-value by using the following equation:
F=| inaccuracy (μl) |+2×imprecision (μl)
Compare the calculated F-value to the corresponding F
specifications, the pipette is ready for use. Otherwise check both your accuracy
and, when necessary, proceed to recalibration procedure.
9.2. Recalibration procedure
1.
Place the calibration tool into the holes of the
calibration adjustment lock (under the thumb
button) (Fig.7).
2.
Turn the adjustment lock anticlockwise to
decrease and clockwise to increase the volume.
3.
Repeat performance test (Checking calibration)
procedure from step 1 until the pipetting results
are correct.
10. MAINTENANCE
To maintain the best results from your micropipette each unit should be checked
every day for cleanliness. Particular attention should be paid to the tip cone (s).
The micropipettes have been designed for easy in-house service. However, please
return your micropipette to your supplier for repair or calibration/recalibration.
Before returning please make sure that it is free from all contamination. Please
advise your supplier of any hazardous materials which may have been used with
your pipette.
Note: Check the performance of your micropipette regularly e.g. every 3 months
and always after in-house service or maintenance.
10.1. Cleaning your pipette
To clean your pipette using ethanol and a soft cloth or lint-free tissue. It is
recommended to clean the tip cone regularly.
10.2. In-house maintenance
1.
Hold down the tip ejector.
2.
Place the tooth of the opening tool between the tip ejector and the tip ejector
collar to release the locking mechanism (Fig.8).
3.
Carefully release the tip ejector and remove the ejector collar.
4.
Place the wrench end of the opening tool over the tip cone, turning it
anticlockwise. Do not use any other tools (Fig.9). The 5 ml tip cone is removed
by turning it anticlockwise. Do not use any tools (Fig.10).
5.
Wipe the piston, the O-ring and the tip cone with ethanol and a lint-free cloth.
Note: Models up to 10μl have a fixed O-ring located inside the tip cone.
Therefore, the O-ring cannot be accessed for maintenance.
6.
Before replacing tip cone it is recommended to grease the piston slightly using
the silicone grease provided.
Note: Excessive use of grease may jam the piston.
7.
After reassembling use the pipette (without liquid) several times to make sure
that he grease is spread evenly
8.
Check the micropipette calibration.
Fig.8
user. If it falls within the
max
Fig.9
Fig.10
5
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