Keep your bottle in top condition with the replaceable LIFESAVER pre-filter/scavenging sponge
Camping, Hiking, Fishing, Travelling, Gap Year or Rafting? The LIFESAVER Pre-Filter/ Scavenging Sponge protects the membranes from objects such as gravel, sand, sticks and mud, prolonging the life of the LIFESAVER cartridge.
Your pre-filter disc may also be used as a sponge. Use it to soak up water from those hard to reach areas like cracks in rocks or shallow puddles. It is suggested that you replace the pre-filter/scavenging sponge every 6 months given average use.
LIFESAVER systems ltd complies with all British, US and European Drinking Water Regulations for Microbiological Reduction as tested and certified by the London School of Hygiene and Tropical Medicine.