Filter Overview All Products x Applications Outdoor 2 Tactical 4 Emergency Preparedness & Relief 8 Disaster Relief 8 First Responders 8 Survival Kits for Liferafts 3 Emergency Stock 14 Humanitarian Aid 8 Solutions Water 6 Food 2 Brands Katadyn 6 Trek'n Eat 2 Effective against Bacteria 4 Cysts 4 Protozoa 4 Sediments 4 Water Source Clear Water 6 Muddy water 6 Group Size 2-5 2 > 10 5 Usage daily 6 often 1 Series Vegan 2 Allergens Gluten Free 1 Lactose Free 2 Packaging Bar 2 Find Spare Part Disaster Relief Our reliable and low-maintenance desalination and water treatment systems purify salt water as well as contaminated fresh water and brackish water. In addition, ready-to-eat emergency rations and freeze-dried meals ensure rapid supply for population groups in need. Projects & Case studies Katadyn First Response Gravity Filter 3L Katadyn First Response Gravity Filter 3L is an emergency filter for families and small groups in temporary need of water filtration solution. discover Katadyn Rapidyn Filter Kit Katadyn Rapidyn Filter Kit is an emergency filter for small to large groups who need clean drinking water temporarily. discover Katadyn Drip Filter Ceradyn Katadyn Drip Ceradyn is a self-contained water filtering station for large amounts of water. Suitable for groups of 10 or more and for extremely dirty water. discover Katadyn Expedition Filter discover Katadyn Rapidyn Siphon Kit Katadyn Rapidyn Siphon Kit is an emergency filter for small to large groups in temporary need of water filtration solution. discover Katadyn Mobile Filter Unit MOT-7 discover NRG-5® Emergency Food Ration discover NRG-5® ZERO Emergency Food Ration discover