Lisa 300/500/Auto

How to Start a Helix / Bowie & Dick (B&D) Test:

Press the Menu button (Top Right) Select and start the B&D / Helix cycle from the “Test cycles” submenu.

Put the test device in the chamber, Close the door and hit the start button.

At the end of the program, remove the test device. If the steam has correctly penetrated, the ink will have completely changed color from what it was before, along the entire length of the strip; if not (insufficient penetration) there will be only a partial variation or none at all.

The duration of the test is about 25 minutes