Ensure safe and accurate dispensing with our Catalyst/Hardner Dispenser. The stock bottle can hold 500ml and the dispenser head can hold 30ml. The dispenser head has 5ml increments to allow easy dispensing. It works by filling the stock bottle at the bottom then squeezing the bottle until the desired amount is reached in the dispenser head. This can then be poured into your resin/gelcoat/flocoat cleanly and safely. Can be used multiple times so long as it is cleaned after each use.