Featuring a dual-shot tip design, these pipet tips combine virgin polypropylene and pliable TPE to provide a rigid and dependable tip with a soft, easy-to-seal, color-coded collar. The innovative design creates an ergonomic tip that can be used across a wide variety of pipettors. OneTouch™ tips are available in traditional plastic racks, or e•dek™ paperboard racks that fit seamlessly into paper recycling programs. Tips are certified free of RNase and DNase, and are non-pyrogenic.