Aquamira Series IV Backcountry Plus Replacement Filter

The Aquamira Series IV Backcountry Plus Replacement Filter is a compact cartridge for compatible Series IV water-treatment systems. It is designed for backcountry use where reducing bacteria in collected water is the main filtration goal. The cartridge adds less than an ounce to a pack, making it easy to carry as a replacement or spare.

Aquamira rates the Backcountry Plus cartridge for up to 1,000 gallons of bacterial filtration under the intended conditions. The Series IV format lets the same filter family work across compatible Frontier MAX, SHIFT, and other supported setups instead of tying the cartridge to only one bottle. That modular design also makes it easier to replace the filtration element without replacing the complete system.

This green replacement filter is useful for hikers, campers, and preparedness kits that already use a compatible Aquamira Series IV housing. Confirm the system interface before ordering so the cartridge matches the equipment you plan to service. See more hydration & water storage for portable treatment and water-carry options.

• Series IV replacement cartridge
• Backcountry Plus filtration for bacteria reduction
• Rated for up to 1,000 gallons under intended use conditions
• Adds less than 1 oz to a compatible filtration setup