Checking The Volume - BRAND Transferpette S 8 Mode D'emploi

Checking the Volume

Depending on use, we recommend inspection of the instrument every
3 to 12 months. The cycle can, however, be adjusted to individual
requirements.
The gravimetric testing of the pipette volume is performed according to
the following steps and is in accordance with DIN EN ISO 8655, Part 6.
1.
Set nominal volume
2.
Condition the pipette
3.
Carry out the test
30
Set volume to the maximum volume indicated
on the instrument (see page 28 for proce-
dure.
Condition the pipette before testing by using
pipette tips to aspirate and discharge the test
liquid (distilled H
discard the pipette tips.
a) Attach new pipette tips and pre-rinse
one time with test liquid.
b) Aspirate liquid and pipette it into the
weighing vessel.
Note: Each individual channel must
be tested separately.
c) Weigh the pipetted quantity with an
analytical balance. (Please follow the
operating manual instructions from the
balance manufacturer.)
d) Calculate the volume, taking the tempe-
rature into account.
e) 3-10 pipettings and weighings per chan-
nel in three volume ranges (100%, 50%,
10% of nominal volume) are recommen-
ded for statistical analysis.
O) five times. After this,
2