Daily steam penetration test for autoclaves. The Heli-check hollow load Process Challenge Device is a reusable device with disposable chemical indicator strips. Indicator change from pink to black demonstrates correct steam sterilisation conditions. Provides permanent record of compliance. 3.5 minutes at 134°C. Kit of 250 indicator strips and 1 Helix device. Kit: Indicator Strips x 250 and Helix Device