Teknic offers Silicone Closing Stopples. Teknic is an ISO 9001: 2000 certified company. The Silicone Closing Stopples is used for milk sample bottles. They can be without any effort stopper tightly. The slit cap types can be pipette without any need to remove the cap. The Silicone Closing Stopples are easy to clean and temperature-resistant over a large range. The excellent tear propagation resistance of the material results in high durability. The Silicone Closing Stopples can be processed with all laboratory devices. The Silicone Closing Stopples are available in blue, grey, red, green, white and yellow colors.