3L Gravity Water Filter Straw System

Enjoy clean drinking water anywhere with the 3L Gravity Water Filter Straw System. Designed for outdoor adventures and emergencies, this filtration kit removes up to 99% of harmful impurities from natural water sources such as rivers, lakes, and streams. With its large 3L gravity-fed design, it provides safe and fresh water for groups and families without the need for pumps or power.

This high-efficiency purifier combines a 0.1-micron hollow-fiber filter, activated carbon fiber, and dual PP cotton layers to deliver 4-stage filtration. It removes sediment, bacteria, microplastics, and other contaminants while preserving the natural taste of water. Capable of filtering up to 5000 litres at a flow rate of 500ml per minute, it’s a must-have for camping, hiking, backpacking, and survival kits.

The included 3L gravity water bag is made from food-grade, ultra-durable material. Simply hang it on a tree or elevated surface and let gravity do the work — no pumping or squeezing required. The straw can also be used directly from a water source, connected to a water hose, or attached to standard 28mm water bottles such as Smartwater or CNOC.

Features:

• 4-stage advanced filtration – PP cotton, activated carbon, and 0.1-micron hollow-fiber membranes
• Removes 99% of bacteria, particulates, and sediments
• Filters up to 5000 litres of natural water
• Flow rate: 500ml/min for fast and clean hydration
• Large-capacity 3L gravity-fed water bag for group use
• Food-grade, durable, and leak-proof materials
• Compatible with standard bottles, hoses, and bladders
• Easy to use – hang or elevate for hands-free filtration
• Lightweight and compact for travel, camping, and emergencies

Specifications:

• Brand: Membrane Solutions
• Model: Personal Water Filter Straw
• Filtration Method: 4-stage (Double PP Cotton, Activated Carbon, Hollow Fiber)
• Filtration Accuracy: 0.1 Micron
• Flow Rate: 500ml/min
• Filter Capacity: 5000 Litres
• Size (Filter Straw): 7.1 inches
• Capacity (Water Bag): 3 Litres
• Material: Food-grade plastic and PP components
• Leak-Proof: Yes

Applications:

• Outdoor activities: camping, hiking, backpacking, fishing, and hunting
• Emergency preparedness: floods, power outages, or survival kits
• Water sources: lakes, rivers, streams, rainwater, and tap water

Package Includes:

• 1 x Gravity Water Filter Straw
• 1 x 3L Water Bag
• 1 x Tree Hanging Strap

Important Notes:

• PO Box addresses are not supported; please provide a physical delivery address.
• If you wish to cancel an order, please contact us within 2–3 hours of purchase.
• Refunds apply to product cost only; shipping fees are non-refundable.
• Some regions may incur additional freight charges due to remote location.

Warranty:

This product comes with a 1-year warranty. If you encounter any issues, please contact our support team for assistance.

Shipping: We offer FREE Shipping Australia-wide on orders over $50. 

Delivery: Under normal conditions, delivery will take between 2 and 12 working days, depending on your location. Please note: remote areas may require longer delivery time. Delivery couriers may be affected over the public holidays period. A tracking number will be provided with your order.

• We sell brand new genuine products at remarkably low prices

• We are 100% Australian owned and operated, ensuring efficient shipping and response time

• We are committed to customer service and customer satisfaction, please contact us if you need any assistance

If you’re not 100% satisfied with the items you purchased, you can return the item for a refund or exchange within 14 days purchase. Please contact us via the Contact us page with your enquiry and check our Returns & Refunds Policy below for more details.