Falcon® 17x100mm, 14 mL high-clarity polypropylene (PP) round bottom test tubes have a 3,000 RCF rating. Each tube features printed blue graduations and a white writing patch. These sterile tubes are individually packaged and come with dual-position polyethylene snap caps, which offer both vented and fully closed positions. Packed 500 per case. RNase/DNase-free. Widely used and referenced in laboratory protocols Dual position snap-cap prevents sample loss with ease of handling Sterile, nonpyrogenicity tested to less than 0.1 EU/ mL