PCR tubes are small tubes designed for use in polymerase chain reactions (PCR). Across International has both clear and white 0.1/0.2 ml PCR tubes, which are ideal for general PCR and qPCR reactions. Our low-profile PCR tubes can reduce evaporation of the reaction solution thus increasing the real-time PCR fluorescent signal strength. Click below to browse our selection of PCR tubes, caps, plates, scrapers, and accessories.