0.2 mL 8-Strip PCR Tubes with Attached Individual Flat Caps by Biologix are clear, thin-walled prime virgin polypropylene strips where every tube has its own flat cap, so tubes open independently and flat caps suit qPCR reading. They are DNase, RNase and human DNA free, non-pyrogenic, stable from -20 °C to 100 °C and fit standard cyclers. 1200 strips per case.