Dispense a wide range of reagents with precision and accuracy using the Jade Bottle Top Dispenser. It features a re-circulation valve that redirects liquid back into the bottle without the loss of reagent. The Jade operates with a smooth plunger movement for bubble-free dispensing and effortless performance even under demanding laboratory conditions. Included adapters fit most laboratory reagent bottles. Available sizes: 28, 30, 32, 36, 40 & 45 mm. Every product is calibrated in an ISO 17025 accredited laboratory. Calibration tool is also included for quick recalibration in the lab in compliance with GLO/ISO 8655 norms. PTFE piston with ETP O-ring provides superior chemical resistance and smooth frictionless piston movement. PTFE Springless valve manifold offers superior chemical compatibility and jam-free operation.