Membrane Solutions Straw Water Filter Survival Filtration Portable Gear Emergency Preparedness Supply for Drinking Hiking Camping Travel Hunting Fishing Team Family Outing Parts & Accessories Unique Timing Settings: The unique

Unique Timing Settings: The unique four timing settings are 30min / 60min / 90min / 120min

and locks in position by tightening a screw at the front

etc just in seconds

Time ranges:30min-48hours

Membrane Solutions Straw Water Filter Survival Filtration Portable Gear Emergency Preparedness Supply for Drinking Hiking Camping Travel Hunting Fishing Team Family Outing Parts & Accessories Unique Timing Settings: The uniqueADVANCED AND SAFE TECHNOLOGY: With Membrane Solutions's advanced safety filtration membrane technology, this filter straw is divided into four stages, including coarse filter screen, Polypropylene nonwovens, coconut shell activated carbon and hollow fiber ultrafiltration membranes. It is able to remove all visible solid sediments,reduce 99. 99999% of harmful substances, and improve the odor, ensuring the safest water in the worst environments.