Designed to simplify aspirating from and dispensing into PCR tubes and plates. Manufactured from polypropylene. Tips have ultrafine points and up to 250µL of headspace to prevent overaspiration and pipettor contamination. Low-binding tips feature a modified polypropylene resin that limits the adhesion of cells, rDNA, and other viscous materials. Tips are RNase-, DNase-, and metal-free. Low-binding tips are also protease and human DNA-free. VWR Signature tips and all sterile tips are endotoxin-free. Sterile tips are gamma-irradiated. Tips and hinged racks are autoclavable to 122°C (252°F).