Boil-proof cap Withstand 28,000 x g Easy to open, easy to close Double, high pressure locking ring RNase, DNase and pyrogen free Unsurpassed clarity Frosted writing surface and graduations Ultra smooth interior-low liquid retention Made from highest quality, virgin, single…

Glass-like clarity allows easy viewing of sample and pellets. A positive seal design allows repeated cap closures that will not pop during boiling. All tubes feature external graduation marks and frosted writing surfaces. Available in natural and five additional colors. All Microcentrifuge tubes…