Quality Control and/or Assurance and similar phrases are in common use but can have different meanings, depending on the type of product involved and on economic considerations. It is proposed that, from the soldering point of view, component design and solderability must be as good as possible and must be regularly checked. There must be adequate control over every aspect of the soldering process, and inspection of the completed assembly must be meaningful with realistic accept/reject levels decided upon at the outset. Having established a complete production scheme incorporating quality checking, it is proposed that no alterations should be made without full consultation and collaboration with all the personnel concerned.