Checking The Volume - BRAND Transferpettor micro Gebrauchsanleitung

Check for leaks daily

4.4 Checking the volume

We recommend testing the instrument every 3 to 12 months depending
on the level of use. However, the testing cycle can be adapted to meet in-
dividual requirements. Gravimetric volume testing of the pipette is car-
ried out according to the following steps and complies with DIN EN ISO
8655, Part 6.
1. Setting the nominal volume
a. Set the maximum specified instrument volume (for procedure, see ).
2. Conditioning the pipette
a. Condition pipette before testing by pipetting once with test liquid
(distilled water).
3. Performing the test
a. Aspirate the test liquid and pipette into the weighing vessel.
997478
a. Set the nominal volume.
b. Aspirate the liquid.
c. Hold the instrument vertically for 10 s
(cap downwards).
d. If a drop forms (see )
Operating manual
71