Thermo Scientific Multidrop® 384 - Lab Equipment, Industrial ...

Chapter 7: Maintenance
7. Open the calibration screw cover on the upper part of the cassette (Fig. 7.7 and Fig. 4.4).
8. Set the volume to 100 µl.
9. Press the stop and prime/drop keys at the same time. After that first release the stop key
and then the prime/drop key. This brings the Multidrop 384 into the volumetric calibration
mode.
10. Press the start key as many times until the water enters the calibration pipette.
Note: Take care not to press the step key accidentally or otherwise 10 ml of water will be
dispensed.
11. Adjust the water level in the pipette to the lower mark by pulling or pushing the syringe piston
(Fig. 7.6).
Upper mark
Lower mark
Fig. 7.6 Adjusting the liquid level first to the lower mark and then to the upper mark
12. Press the start key and wait until the water level stops. It should be at the upper mark, 1000 µl
(± 1.5%) (Fig. 7.6).
13. If the volume is higher than 1000 µl, turn the calibration screw (Fig. 7.7) clockwise with a
screwdriver; one turn for each 10 µl (1% from the volume dispensed); if the volume is lower than
1000 µl, turn in the opposite direction.
Thermo Scientific Multidrop ® 384 User Manual; Rev. 3.4, Cat. no. 1507010 41