Bottle top dispenser with recirculation valve

The presence of the unique springless valve, PTFE piston and ETP O-ring provides better chemical compatibility, ensuring smooth and effortless wiper-like piston movement.Adjustable delivery nozzles provide users with flexibility in demanding laboratory conditions.Neck adapters in different sizes (28, 30, 32, 36, 40 and 45 mm) ensure compatibility of the dispenser with most reagent bottles.