How should a LifeStraw be used for the first time?
First time users are advised to spit out the first couple of mouthfuls (40ml) as a small amount of harmless black carbon water will be expelled on initial use. First time users may find it difficult to start sucking. This is because a natural brake on the flow of water has been put into the LifeStraw as a controlled flow between 100ml and 150ml per minute is needed to receive the maximum benefit of the bacteria killing effect.
