Eppendorf SOP User Manual
Page 10
10
Calibration
Eppendorf SOP
English (EN)
2.2.3
Dispensing the test volume into the weighing vessel
1. Rest the filled tip up against the wall of the weighing vessel at an angle.
2. Dispense the test liquid slowly until the first stop (measuring stroke).
3. Press the control button to the second stop (blow-out) and dispense the
remaining liquid in the tip (does not apply for dispensers and burets).
4. Hold down the control button and pull the tip up the vessel wall.
5. Let the control button slide back into position.
6. Determine the weight.
7. Complete all measurements of a measuring series as described and calculate
the systematic and random error (see p. 11).
8. In case of adjustable-volume pipettes, determine the measurement with the
nominal volume, 50 % and 10 % of the nominal volume. Always begin the
test with 10 % of the nominal volume.