MicroSTOP WHITE sterilization pouches with Class 4 indicator. Made of sturdy white paper, the Class 4 indicator changes colour when sterilization is carried out correctly at the required time and temperature. Heat-resistant, eco-friendly materials keep instruments safely stored for up to 50 days after sterilization. Available in 60x100, 75x150, 50x200 and 100x200 mm. 100 pieces per box.