- Use physiologically harmless, food-compatible materials
- Use materials with the highest possible corrosion resistance
- Surfaces and surface structures should be smooth
- Avoid pores, cracks, gaps, and defects of any kind on surfaces and joints
- Minimize or optimize avoidable visible gaps, indentations or protrusions
- Component design should be flow-optimized and geometric avoiding, where possible, eddy formation through delamination and dead-water zones
- Systems should be designed so that they are easy to maintain and easy to access
- Cleaning should be possible without dismantling the system, cleaning-in-place (CIP)