The Volumatic spacer is a medical device designed to help improve delivery of pressurized metered dose inhaler (puffer) medications to your lungs. It helps overcome the coordination problems many people have arising from the misuse of their inhaler. Single breath technique 1 Remove cap, shake inhaler and insert into device 2 Place mouthpiece in mouth 3 Press canister once to release a dose of drug 4 Take a deep, slow breath in 5 Hold breath for about 10 seconds, then breathe out through the mouthpiece 6 Breathe in again but do not press the canister 7 Remove device from mouth 8 Wait about 30 seconds before repeating steps 2-7