Rubber Bulb-Type Safety Pipet Fillers, Tough 100% natural rubber patented pipet fillers eliminate mouth pipetting and handling of hazardous materials, Each

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Tough 100% natural rubber patented pipet fillers eliminate mouth pipetting and handling of hazardous materialsTwo stainless-steel ball valves control vacuum for precise pipet filling and liquid delivery with one hand.Expel air by squeezing bulb, then draw up liquid by pressing valve “↑” on stemTo release, press valve “↓” on side of stemFit pipets with O.D. ranging from 0.187 to 0.375 in. (4.5 to 9mm)Flip style pipette fillers enables one handed bulb operation and removal of top white cap to clean out the bulb from inside