Rapid Pure Scout Hydration Pack PurifierAbout this item Insert the Scout into your hydration pack hose for easy water purification on the go. With this inline water filter, there's no waiting, no back flushing, and no special handling RapidPure has a flow rate up to 8 times faster than traditional microfilters and purifies as it filters, making it exponentially faster than standard water purifiers Drink the water confidently wherever you go. The Scout inline water purifier removes up to 99.