Connect these washers to a water supply to rinse many pipettes efficiently, reliably, and safely. Place pipettes within the carrying basket, which cushions them to prevent breakage. After soaking them, transfer the basket to the rinser. The rinser fills with clean water to wash your pipettes and rapidly siphons out contaminated water to maintain cleanliness. All components are made of polyethylene or polypropylene to withstand common cleaning solutions.