Millbank Bag

Basics

• An OSLT / Appropriate Materials type approach to Water Filtration
• Essentially a bag made of Tightly Woven Canvas (Typically something like Cotton that is cellulosic and porous) that filters MOST particles out of water
  • Probably not good enough compared to Microfiltration / Nanofiltration via Hollow Fiber Membrane based solutions like Lifestraw / Portable Water Filtration Pumps (such as those made by MSR etc)
• If combined with Boiling (Essentially 100c Based Pasteurization , Modified Procedures like Tyndallization , and Autoclaving can be more effective against more durable pathogens/products such as spores), it can make safe water from a comparatively simple process

COTS Options

Forest Fundamentals

• An Amazon Listing for the Product ( ‘’’~19 USD Each as of This Edit’’’ )
  • Has Printed Directions + a Max Fill Line on the Bag
  • Comes with a Stuff Sack
  • Mentions:
    • ” The Second Edition Millbank Bag: Now featuring taped seams and double overlock stitching, we've significantly enhanced its durability to reduce leakage. The waterproof carrying bags have been upgraded with reinforced stitching for added strength.”
    • ”thicker 12oz Unbleached Cotton Canvas ”

Usual Flow Rate

• In terms of planning, per each bag how much water per minute/hour etc?