Sturdy pipettor holder rack accommodate many commonly used pipettors. Keep pipettors within easy reach at multiple workstations. Attach to any shelf or benchtop edge using the large locking thumbscrew clamp. Combine with additional clamps and extenders to assemble the exact number of holders needed at a specific work location. Utility tray, which mounts between two clamps, is ideal for storing pipetting supplies and other small items. Manufactured from polypropylene resin. Pipettor holders are strong enough to support the weight of even the heaviest pipettor. Chemical-resistant and easy-to-clean. Steam autoclavable at 121°C (250°F).