Axygen* Microtubes with Screw Cap

Precision molded from 99.9% pure virgin polypropylene and free of mineral fillers and heavy metals. High transparency tubes have clear or color coded caps with syringe port-�easily pierceable for radioisotope labeling and fraction collecting. The threaded O-ring design ensures a uniform closure allowing centrifugation up to 20,000 x g and resistance to a wide range of chemicals. Patented alignment feature allows tubes to align with the centrifuge rotor for multiple applications, such as desalting. Ribs are designed for the AxyRack* which has 24 serrated holes for the ribs to fit into, offering single handed opening and closing. Tubes are certified RNase-, DNase- and endotoxin-free on a lot by lot basis. Also available pre-sterilized.