Rapid ECH0580A Pipette Filler is a rubber bulb for pipetting noxious solutions, microbial suspensions and other harmful and unpleasant solutions. The pipette filler comprises a bulb and three pinch valves controlling influx and efflux of pipette contents. Bulb diameter is 54 mm. * Pipette Filler rubber bulb * For pipetting noxious solutions, microbial suspensions and other harmful and unpleasant solutions. * Comprises a bulb and three pinch valves controlling influx and efflux of pipette contents. * Bulb diameter is 54mm.