Ultra-thin tube walls provide uniform and efficient heat transfer Avoid sample loss from evaporation with easy open and close lids Angularly-attached strip caps prevent lids and hinges from interfering with each other when several strips are racked simultaneously 230461 and 230462 strips feature easily separable tubes to customize strips 230463 strips feature robust inter-well linkages, increasing stability and mitigate spills Individual tubes are available with either frosted flat caps for easier labeling, or optically clear flat caps for RT PCR applications Certified RNase/DNase/DNA-free and non-pyrogenic to ensure reliable experimental results Conveniently packaged in re-sealable bags to minimize risk.