Før De monterer Penfill cylinderampullen i insulindispenseringssystemet, skal De bevæge den op og ned mellem position a og b (se tegningen), så glaskuglen bevæger sig fra den ene ende af cylinderampullen til
Before you put the Penfill cartridge into the insulin delivery system, move it up and down between positions a and b and back (see the picture) so that the glass ball moves from one end of the cartridge to the other at least 20 times.