Use Nalgene 6378 Safety Waste Funnel Systems to temporarily contain waste on the benchtop or under the lab hood. Available in 10″ diameter funnel with 83B closure and 5.5″ funnel with 38-430 closure. Funnels feature the Easy Snap Safety Latch to minimize spillage if accidentally tipped over and a larger diameter funnel for easy pouring. The vent system helps reduce fumes and splashing while the removable neck screen traps large particles, like stir bars. Designed for solvent, chemical and biological waste, it is recommended for use with Nalgene containers.