RNase/DNase-Free, High-capacity, ClickSeal MicroCentrifuge Tubes offer increased volumes, yet fit all popular rotors. New, easy close/open, self-centering cap design allows single-handed use. Writing surface on flat cap and side wall for quick sample ID. Target syringe port is easily pierced for spill-free handling of hazardous substances. Autoclavable, chemically resistant polypropylene tubes withstand temperatures from +121 degrees C to -180C, and an RCF over 17,000xG. Boilable, ClickSeal cap design allows repeated closures; eliminates pressure-induced popping of caps. 1.7ml, Clear, 1000/pack.1.7ml Tube, Clearer ClickSeal MicroCentrifuge Tubes with Easy Close/Open Self-Centering Caps, Clear, 1000/Bag