Eppendorf Adjustable Micropipette RESEARCH PLUS

Is the multi-channel lower part separated from the upper part?

Position a pipette tip under the piston and carefully take the piston off the upper rail

Carefully pull the piston out in an upward direction without bending it

Take the tip cone at the lower end and push it slightly upwards to compress the spring

Lift the tip cone slightly and release it from the lower rail

Relax the spring by letting the tip cone slide back again above the lower rail

Take the tip cone with the cylinder and the spring out of the upper rail

Fit the cover plate with integrated ejector

Mount the lower part into the upper part until it engages audibly

Carry out a gravimetric test of the systematic and random error

Record any issues found during the gravimetric test

Slide the ring marked 'PUSH UP TO RELEASE' up by about 5 mm

Ensure the lower part comes off

Take the lower part out of the upper part

Ensure the following conditions are met before calibration

Remove the silver calibration seal

Insert the adjustment tool from the delivery package

Turn the adjustment tool until the desired value is displayed on the calibration display

Carry out weighings to verify trueness and precision

After checks, stick the red calibration seal from the delivery package on

Piston and Piston Spring Installation

Guide piston and piston spring into the cylinder ensuring no perceptible resistance

Are the piston springs with double windings pointing downwards?

Piston and Piston Spring Pressing

Keep piston and piston spring pressed

Keep the stop pins on the piston mount pressed with the other hand

Mount the piston mount ensuring the two stop pins engage in their retainers