Katadyn Steripen Classic 3 with a 40-micron pre-filter protects 99.9% against virus, bacteria and protozoa. This lightweight ultraviolet water purifier is perfect for hikes or cycle tours. It can filter both clear and cloudy water. It is fast acting (purifying up to 1 litre in 90 seconds) and water resistant.

Four AA alkaline batteries can purify 50 litres of water or four lithium batteries can purify 150 litres.

For information on instruction, see the .