Contact Us
Gift Cards
Track My Order
My Account
Cart
United Kingdom · GBP
Beau produit, bien fait. Excellent pairage avec mon purificateur Grayl.
Millbank Bag | Water Filter Bag | Pre-filter for the Grayl
Reviews£16.95
DESCRIPTION
At Forest Fundamentals, we have been long-term users of the old British Forces Millbank bags. However, these bags are extremely hard to find now, and the ones we did manage to get our hands on showed signs of years of use - they were full of stains and oil residue. So we thought, why not start to make our own!
Meet the Forest Fundamentals Millbank Bag! We have used similar proportions as the original British forces bags. However, after some testing, we made a few design changes including:
The materials: The bags are handmade using a high-density 12oz unbleached Cotton canvas. Unbleached Cotton canvas is made from natural cotton fibers and has not been subjected to the chemical bleaching process. For additional strength and durability, we have used V69 3ply Bonded Polyester Thread. The same thread is used in high-quality tents and backpacks.
Overlock double switching has been used on all of the seams for added strength and to avoid any raw edges. The overlock stitching also provides another layer of filtering. Our Millbank bag is larger than other designs, making it possible to purify larger amounts of water at once. We print the instructions and logo onto the bag using waterproof, non-toxic dye so there is no chance of it washing off after use
The Millbank also comes with a 1M long 550lb ‘Survival Cord’ lanyard which includes strands of copper wire, fishing line, waxed jute, and parachute cord. This multi-purpose card is invaluable in the field and has a range of uses including repairing shoelaces, fishing, snares, shelter building, and more. The super-long lanyard also makes it possible to hang the bag close to the collection device, avoiding any possible spillage caused by the bag swaying in strong winds.
Also included is a 210D Nylon waterproof drawstring carrying bag and a detailed instructions card. The pouch makes it possible to transport the bag after use without soaking the inside of your pack! Strapping the Millbank bag to the outside of your pack is a great way to dry the bag on the move. The carrying bag also doubles as a great emergency tinder pouch!
During our testing, we explored different bag shapes and materials to boost the filtration rate while ensuring complete detritus removal from the water. We found that expanding the filtration point quickened the process. Subsequent assessments with turbidity meters revealed that this faster filtration did not compromise the bag's ability to filter out detritus, provided the material of the bags was kept the same.
What is a Millbank Bag?
A Millbank Bag is a highly effective water filtration device designed to remove detritus from water. These detritus include sand, mud, silt, or other suspended particulate matter.
Ensuring the removal of all detritus from the water before proceeding with further sanitation is of the utmost importance. Even in the absence of waterborne diseases, turbid water can still cause irritation and harm to the digestive system. Moreover, turbidity negatively impacts the effectiveness and lifespan of other water sanitation systems including the well-known LifeStraw, for instance. Prioritizing the filtration of impurities is crucial for obtaining safe and clean drinking water.
It’s essential to note that a Millbank bag will not effectively filter out pathogenic organisms unless they are attached to the detritus being filtered. Additional sanitation methods, such as chemical or heat sterilization are required to ensure the water’s safety. If your water source is already clear and free from detritus, using the Millbank bag may not offer significant advantages. However, few of us are lucky enough to find such pristine water sources in the wilderness! Hence, the Millbank bag still remains a fundamental part of any outdoors person’s water purification systems.
MAIN FEATURES
TECHNICAL SPECS & MATERIALS
Product Gallery
Watch: Millbank Bag | Water Filter Bag | Pre-filter for the Grayl in Action
USING THE MILLBANK IN THE MOUNTAINS
Watch on YouTube
FULL MILLBANK HOW-TO / DEMO
Watch on YouTube
Millbank Bags & coffee in the woods
Watch on YouTube
ShortMillbank Bags, FF Nesting Stove & Nettle Tea
Watch on YouTube
RELATED PRODUCTS
Customer Reviews
Overall rating: 5.0 / 5 from 56 reviews.
I was cleaning out the water butt which has a few years of "Gunk" captured by the water as it runs off of the roof into the butt so I thought it would be a good test of the bag so I hung the bag on the washing line and used an old jug to pour water in from the tub, I actually have a 3 min video but the review would not let me upload it. Pic 1 is how gunky the water in the butt looked. Pic 2, shows the gunky water in the bag. Pic 3 I trapped the water in a Pyrex jug and as you can see it comes out clear. Now the water still needs boiling or purifying, however for me given how the water looked it is proof of the quality of the bag and the need to keep it close.
GREAT Millbank Bag!!! VERY High Quality!!! Does what it's supposed to, filters out the crud giving my Grayl Filter longer life. Dries quickly as well. Kudos to Elvis and the Forest Fundamentals crew!
Bought from Amazon .. I love it the canvass feels very thick. Feels well made and I love the size of it I feel like I could fill several bush pots with it. It will come in handy if I’m out with multiple people. My only issue is the grommets when the bag is full of water and hanging the canvass around the grommets get stretched out. Over time it looks like the grommets will pull out. Keep up the great work I love supporting a small family business.
Millbank Bag | Water Filter Bag
Store owner replied: Hello Justin, Thanks for the feedback and sorry to hear the eyelets started to rip with use. We found this testing in a few of the bags -- We have since added a thin piece of nylon between the two layers of cotton to ensure this doesn't happen. I have run a few tests since throwing the bag around when filled with water and it has fixed this issue. Cheers, Elvis
Feels good quality and looking forward to giving it a try.
My first purchase with this company, goods arrived quickly, and in good condition. Many thanks.
High quality!
Just got them today, looks awesome.
Great product
Order arrived in good time and well packaged. Have yet had the opportunity to use my bag yet but it seems very well made
Simple and effective mill bank, great features built into a versatile bit of kit
My son, ex army, also approved of it. As soon as is practical I will run trials.
Genuine Millbank bag. Useful pre-treatment before using Katadyn, Lifestraw... or boiling. All Forest Fundamental gear is thought through, practical and complete 👍
Works great!
Great 👍 stuff be ordering more things
Fantastic item just what I wanted great price speedy delivery another top quality item from forest fundamentals 👍👍👍
Love this built like a tank it will give years of work
I came as planned and there was not a lot of issues with it
1st class product and service thank you
Excellent customer service, as always.
Does exactly what it is supposed to do. Made well and looks like it will last for long time. Buy once and be happy!
I have a few items from the guys at FF and every item has been great in the field, great to support British small business
Absolutely fantasic. Simple and effective
Bon tout et en anglais c'est mon seul reproche , si vous ne connaisse pas le produit ,faut aller sur internet pour savoir comment activer le produit avant utilisation . C'est utiliser depuis des lustre même de no jours en OPS et bushcraft , donc parfait car difficile a trouver surtout des vrai et neuf. La finition et parfaite et tout et comme annoncé , pas de surprise.
Excellent quality,
Good quality, will hold up really well.
I have used many millbank bags, but these have been the best. Whilst their performance as pre-filters for boiling/chemical disinfection seems just as good as other reputable products, it is their other details which set them apart: 1) Clear and durable 'drain line' to wash the outer layer before collection- some bags have a faint mark sewn in, or a short-lived printed mark 2) Waterproof bag to stash a dirty millbank. Nice touch if you ask me, as stuffing a damp millbank at the bottom of a canteen pouch is a great way to end up with mould 3) Solid construction means I will probably never need to buy another unless I lose it. Having said that I will be buying a few spares.
Great product, efficient service, Thank you
I don’t know if this is one of those items you hope to never use but if I do, I have one.
Great
Gets rid of dirty water, which it does really well, still need to boil the water to make it safe to drink.
well done
First class customer service the item I bought is high quality I’m very happy with everything.
just as it looks on the website
Prompt delivery and the product is excellent.
I've an original the I was issued with during the '70s that I have in my BOB. And, I have to say that this item is class. Thanks to Lee of 'Outsider Tank' and his YouTube channel for the cracking review that prompted me to buy from you! All the best👌 Martin
Millbank Bag | Water Filter Bag
Store owner replied: Hi Martin, I haven't seen that video from Outsider Tank - I'll have to drop him a message now. Cheers! Elvis
Seems to be of high quality materials and very well made. Looking forward to using it. Delivery was quick. Really liked the storage back that came with my order.
Very good bit of kit👍
Fantastic first stage filter. very well manufactured. Highly recommended.
The bag is sturdy and well made. I like that the instructions are printed on the bag...very convenient. Customer service was prompt and helpful when I had a question.
