HELIX PROCESS CHALLENGE (PCD) TEST Helix Process Challenge Test Device (PCD) made utilizing stainless steel as opposed to customary plastic implies that the VERIFY+ Helix PCD Test is a more solid gadget. The Helix Process Challenge Test Device is utilized to guarantee that your sterilizer is working appropriately, as showed by a test strip which is put inside the helix PCD module and changes shading to affirm remedy handling