The PCD Strips by Wabenzi is one of the best way process challenge device to perform a "worst case" scenario when sterilizing equipment. This test is suitable for every sterilization process in a loaded autoclave. It can also be used to ensure maximum steam penetration where hollow instruments, or instruments with small Lumina, are concerned. It is easy to interpret the strip due to the clear and even color change. The ink used is non-toxic and it can therefore not cause any damage to instruments. Due to the slice strip at the back side, the strip can be divorced easily in a log or on a registration card. For most countries these tests are sufficient.