Common to all sections below: Make sure to keep any components that are supposed to be in vacuum very clean. During preparation at CUO, gloves were usually found too clumsy to use, and frequently washed bare hands were used in stead. For cleaning, laboratory grade acetone has been used. Since the last baking cycles, cleaning with acetone has been restrained to bare metal surfaces, not any anodized surfaces. O-rings has been kept away from acetone, where possible.