Bioron´s thin-walled PCR-Tubes basically withstand the thermal and mechanical strain of being heated in a thermoblock or being subjected to high-speed centrifugation. It is possible to open and close them with one hand only, without any risk of the sample being contaminated. If the PCR-Tube fail to fulfill these requirements, several erros may occur which threaten the succes or the reproducibility of the experiment. It is therefore essential to select a correct Micro Test Tube, like Bioron´s. The tubes offer optimal clear transparency and are produced in clean rooms under DNA- and RNA-free, ATP-free and pyrogene-free conditions. Optimized for the most popular Thermocyclers.