Membrane Solutions Personal Water Filter Straw S1

Compact Filtration for Your Outdoor Kit

Pack the Membrane Solutions S1 Personal Water Filter Straw for hiking, camping, or your emergency supplies. Its non-electric design offers a portable filtration option without batteries, with connections for compatible bottles and gravity-fed setups.

Filter Design and Compatibility

• Five-stage design combines a coarse screen, double-layer PP cotton fiber, coconut-shell activated carbon, and a hollow-fiber ultrafiltration membrane.
• Manufacturer-listed membrane pore size of 0.1 micron.
• Compatible with suitable 28 mm threaded bottles and compatible soft pouches or gravity systems. Check the connection before use.
• Backflush-compatible design supports routine cleaning according to the user manual.
• Available in multiple pack quantities and colors.

Choose Your Option

Select your preferred color and quantity before ordering. Check the included components for your selection; compatible bottles, pouches, and gravity bags are not necessarily supplied with the straw.

Important Water-Source and Care Guidance

Follow the supplied manual for priming, filtration, backflushing, drying, storage, and replacement. Filter life and flow depend on water quality and maintenance.

This is a water filter, not a guarantee that any source is safe to drink. It does not desalinate seawater or lower total dissolved solids (TDS). Do not rely on it to remove viruses or dissolved chemical contamination. Use only water sources permitted by the manufacturer, and follow public-health guidance when additional treatment is needed.