Bio-Reaction tubes are manufactured from high quality polypropylene, offer a convenient and economical option for small scale, high density suspension cell culture. Bio-reaction tubes consist of centrifuge tubes with a 0.22μm hydrophobic membrane in the vent cap. These tubes are perfect for biological reaction experiments that require aseptic conditions with free gas exchange. >Caps have an ultrasonically welded 0.22μm hydrophobic membrane to allow gas exchange >With a large unerasable frosting white printed writing area >Save money with the ability to culture and centrifuge in one tube >Maximum RCF is 12,000g for 15mL tubes, 16,000 for 50mL conical bottom tubes, and 6,000g for self-standing tubes >Engraved graduation at the conical bottom of each tube >Leak-proof >Sterilized by gamma irradiation >Non-pyrogenic Ordering Information >Tubes are packaged in durable and resealable(zip closure) bags. >Every bag/case has printed lot No. for quality traceability