Recalibration Procedure - Human HumaPette Smart-Line User Manual

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FIGURE 6
HumaPette Smart-Line | User manual
5. Pipette distilled water into a tared container and read
the weight in mg. Repeat at least five times and record
each result. Use an analytical balance with a readability of
0.01 mg. To calculate the volume, divide the weight of the
water by its density (at 20 °C: 0.9982). This method is based
on ISO 8655/DIN 12650.
6. Calculate the F-value by using the following equation:
F = | inaccuracy (µl) | + 2 x imprecision (µl).
Compare the calculated F-value to the corresponding
Fmax user. If it falls within the specifications, the Hu-
maPette is ready for use. Otherwise check the accuracy
and precision and, if necessary, proceed to the recalibra-
tion procedure.

8.2 Recalibration procedure

1. Place the calibration tool into the holes of the calibration
adjustment lock (under the thumb button) (Figure 6).
2. Turn the adjustment lock anticlock wise to decrease and
clockwise to increase the volume.
3. Repeat performance test (checking calibration) procedure
from step 1 until the pipetting results are correct.