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expired Posted by TattyBear | Staff • Apr 19, 2024
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expired Posted by TattyBear | Staff • Apr 19, 2024

4-Pack Membrane Solutions Personal Water Filter Straws

w/ Subscribe & Save + Free Shipping

$16

$43

62% off
Amazon
40 Comments 24,780 Views
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Deal Details
Membrane Solutions Corp via Amazon has 4-Pack Membrane Solutions Personal Water Filter Straws on sale for $15.59 when you clip the 50% Off coupon on the page and checkout with Subscribe and Save. Shipping is free w/ Prime or on $35+ orders.

Thanks to Deal Hunter TattyBear for sharing this deal.About this Item:
  • SGS certificated, Test Report NBF21-004693-01
  • up to 1,320 gallons lifespan
  • 7.1'' long and 1" in diameter
  • Fits any 28mm threaded bottle
  • 5-Stage Filtration System removes up to 99.99999% of harmful substances (pollution, odor, chlorine and organic chemicals, etc.)

Editor's Notes

Written by SaltyOne | Staff
  • About this Deal:
    • Rated 4.7 out of 5 stars from customer reviews.
    • This price comes out to $3.90 per filter straw.
    • At the time of this posting, our research indicates that this is $1.60/each lower than the next best options with prices starting from $5.50/each. -SaltyOne
  • About this Store:

Original Post

Written by TattyBear | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Membrane Solutions Corp via Amazon has 4-Pack Membrane Solutions Personal Water Filter Straws on sale for $15.59 when you clip the 50% Off coupon on the page and checkout with Subscribe and Save. Shipping is free w/ Prime or on $35+ orders.

Thanks to Deal Hunter TattyBear for sharing this deal.About this Item:
  • SGS certificated, Test Report NBF21-004693-01
  • up to 1,320 gallons lifespan
  • 7.1'' long and 1" in diameter
  • Fits any 28mm threaded bottle
  • 5-Stage Filtration System removes up to 99.99999% of harmful substances (pollution, odor, chlorine and organic chemicals, etc.)

Editor's Notes

Written by SaltyOne | Staff
  • About this Deal:
    • Rated 4.7 out of 5 stars from customer reviews.
    • This price comes out to $3.90 per filter straw.
    • At the time of this posting, our research indicates that this is $1.60/each lower than the next best options with prices starting from $5.50/each. -SaltyOne
  • About this Store:

Original Post

Written by TattyBear | Staff

Community Voting

Deal Score
+67
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Visit Amazon

Price Intelligence

Model: Membrane Solutions Portable Water Filter Straw Filtration Straw Purifier Survival Gear for Hiking, Camping, Travel, and Emergency, Blue, 4 pack

Deal History 

Sort: Most Recent
Post Date Sold By Sale Price Activity
05/26/25Amazon$16
0
08/27/24Amazon$16
2
06/08/24Amazon$16
8
06/05/24Amazon$16 popular
24
12/12/23Amazon$25
1
09/28/23Amazon$16
1
08/22/22Amazon$31
0
02/06/21Amazon$22
1
Show More

Current Prices

Sort: Lowest to Highest | Last Updated 5/29/2025, 01:10 AM
Sold By Sale Price
Amazon$38.98
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Top Comments

mcjiver
I hope to shed some light as I have worked in this industry for several companies. To those who are worried about it being an unknown brand: the filter media design and material are going to be the same in all these straw tube-style filters. They are extremely cheap to manufacture but early adopters and well known brands charge more because they market better. They should not effectively expire if they are kept out of damp or humid conditions. On that same note, best practice is to back flush with clean water after use or every 20-30 gallons during active use as the media does plug up and contaminants need to be released. Always shake them dry between use and don't store them in something air tight.
Sorry, that was long winded.
sarcasmogratis
Is this a well known brand? I'm unfamiliar.

Edit: not well known. some apologists in the comments claiming they are all the same...which is a weird claim for safety equipment.
the business address is a residential house. always a little sketch.
the name is hard to pin down. one nearby company does provide filtration for lab equipment but doesn't list this item on their website.
YMMV/Buyer Beware ...which for any safety/emergency equipment is an immediate pass for me.

I see it's being promoted by a Paid SD Staff Influencer...is this an affiliate? paid advert? any vetting/communication with the company to clear up the concerns? it's been pushed to Frontpage now. I also wonder if the phrasing "sharing this deal" is meant to be a CYA rather than claiming to have "found" this deal like some other posts or if it's just DE style choice

Edit 2:
https://www.mspurelife.com/
this might be their website
0% surprised to see they gave an affiliate/referral kickback program
website business address:
https://maps.app.urlhasbeenblocke...uGdamwGSq7
which then goes to this
https://www.membrane-solutions.com/
gastoncards
Be advised that these are not the well known life straw brand. They are even made with the same color etc to make people think they are life straw at first glance. They may work ok, I don't know. However when it comes to potential lifelines I try and stick to what I know I can trust. You don't skimp on those types of things.

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Apr 19, 2024
1,192 Posts
Joined May 2009
Apr 19, 2024
DuckinCA
Apr 19, 2024
1,192 Posts
Everyone should have one of these. They are cheap, (especially with this deal) small, (easy to store) and could save your life in an emergency.
1
Apr 19, 2024
2,121 Posts
Joined Jan 2007
Apr 19, 2024
psychojinx
Apr 19, 2024
2,121 Posts

Our community has rated this post as helpful. If you agree, why not thank psychojinx

Quote from DuckinCA :
Everyone should have one of these. They are cheap, (especially with this deal) small, (easy to store) and could save your life in an emergency.
After this purchase just now to add to my 5 already in storage, I have 9 total. Got in for the same price about a year ago on same 4 pack. Not only good for emergencies, but for wherever you want to go without taking water with you. Whatever water you can find from wherever (except non-diluted urine/salt water) this will make it perfectly drinkable and safe instantly. BTW, One gallon of water weighs 9 lbs....think about that....These things are worth their weight in gold to be honest if you stop and think about. $3.75 per straw can keep you comfortably alive for 4 years straight at one gallon of filtered water per day. (each filter good for 1400 gallons). The 4 pack for $15 can do it for 16 years straight. Cheapest life insurance you can buy for uncertain times...
2
1
Apr 19, 2024
188 Posts
Joined Nov 2019
Apr 19, 2024
jazzpianist
Apr 19, 2024
188 Posts
Thanks OP for posting another great find!
Pro
Apr 19, 2024
13,899 Posts
Joined Feb 2007
Apr 19, 2024
sarcasmogratis
Pro
Apr 19, 2024
13,899 Posts

Our community has rated this post as helpful. If you agree, why not thank sarcasmogratis

Is this a well known brand? I'm unfamiliar.

Edit: not well known. some apologists in the comments claiming they are all the same...which is a weird claim for safety equipment.
the business address is a residential house. always a little sketch.
the name is hard to pin down. one nearby company does provide filtration for lab equipment but doesn't list this item on their website.
YMMV/Buyer Beware ...which for any safety/emergency equipment is an immediate pass for me.

I see it's being promoted by a Paid SD Staff Influencer...is this an affiliate? paid advert? any vetting/communication with the company to clear up the concerns? it's been pushed to Frontpage now. I also wonder if the phrasing "sharing this deal" is meant to be a CYA rather than claiming to have "found" this deal like some other posts or if it's just DE style choice

Edit 2:
https://www.mspurelife.com/
this might be their website
0% surprised to see they gave an affiliate/referral kickback program
website business address:
https://maps.app.urlhasbeenblocke...uGdamwGSq7
which then goes to this
https://www.membrane-solutions.com/
Last edited by sarcasmogratis April 21, 2024 at 09:41 PM.
5
1
Apr 19, 2024
242 Posts
Joined May 2015
Apr 19, 2024
gastoncards
Apr 19, 2024
242 Posts

Our community has rated this post as helpful. If you agree, why not thank gastoncards

Be advised that these are not the well known life straw brand. They are even made with the same color etc to make people think they are life straw at first glance. They may work ok, I don't know. However when it comes to potential lifelines I try and stick to what I know I can trust. You don't skimp on those types of things.
4
3
Apr 19, 2024
852 Posts
Joined Nov 2020
Apr 19, 2024
samfromny
Apr 19, 2024
852 Posts
Quote from gastoncards :
Be advised that these are not the well known life straw brand. They are even made with the same color etc to make people think they are life straw at first glance. They may work ok, I don't know. However when it comes to potential lifelines I try and stick to what I know I can trust. You don't skimp on those types of things.
On Amazon there's also a link for the "newer model". What's the difference and do they "expire"?
Apr 20, 2024
54 Posts
Joined Mar 2014
Apr 20, 2024
mcjiver
Apr 20, 2024
54 Posts

Our community has rated this post as helpful. If you agree, why not thank mcjiver

I hope to shed some light as I have worked in this industry for several companies. To those who are worried about it being an unknown brand: the filter media design and material are going to be the same in all these straw tube-style filters. They are extremely cheap to manufacture but early adopters and well known brands charge more because they market better. They should not effectively expire if they are kept out of damp or humid conditions. On that same note, best practice is to back flush with clean water after use or every 20-30 gallons during active use as the media does plug up and contaminants need to be released. Always shake them dry between use and don't store them in something air tight.
Sorry, that was long winded.
5
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Apr 20, 2024
219 Posts
Joined Aug 2010
Apr 20, 2024
vgyliu
Apr 20, 2024
219 Posts
So I looked at lifestraw and it seems to filter only 0.2 micron while these can filter 0.1 micron so the posted one should filter better
1
2
Apr 20, 2024
1,524 Posts
Joined Sep 2006
Apr 20, 2024
my3cents
Apr 20, 2024
1,524 Posts

Our community has rated this post as helpful. If you agree, why not thank my3cents

Quote from gastoncards :
Be advised that these are not the well known life straw brand. They are even made with the same color etc to make people think they are life straw at first glance. They may work ok, I don't know. However when it comes to potential lifelines I try and stick to what I know I can trust. You don't skimp on those types of things.
The LifeStraw brand claims NSF Certified, these don't.

https://www.nsf.org/knowledge-lib...tification
2
Apr 20, 2024
242 Posts
Joined May 2015
Apr 20, 2024
gastoncards
Apr 20, 2024
242 Posts
So you are going to think that some Chinese purposely fake looking filter is better than a well known proven brand based on what they post?? Ugh….,
1
3
1
Apr 20, 2024
242 Posts
Joined May 2015
Apr 20, 2024
gastoncards
Apr 20, 2024
242 Posts
Quote from mcjiver :
I hope to shed some light as I have worked in this industry for several companies. To those who are worried about it being an unknown brand: the filter media design and material are going to be the same in all these straw tube-style filters. They are extremely cheap to manufacture but early adopters and well known brands charge more because they market better. They should not effectively expire if they are kept out of damp or humid conditions. On that same note, best practice is to back flush with clean water after use or every 20-30 gallons during active use as the media does plug up and contaminants need to be released. Always shake them dry between use and don't store them in something air tight.
Sorry, that was long winded.
Not going to trust my life or families on some unknown Chinese imposter brand that purposely attempts to make people think they are legit life straws. They are intentionally trying to be deceptive. Just my opinion based on field use in 8 countries and having my life depending on a water filter.
1
4
Apr 20, 2024
373 Posts
Joined Feb 2016
Apr 20, 2024
kemicala
Apr 20, 2024
373 Posts
Quote from my3cents :
The LifeStraw brand claims NSF Certified, these don't.

https://www.nsf.org/knowledge-lib...tification
The description says it IS NSF certified though.
2
Apr 20, 2024
1,714 Posts
Joined Mar 2013
Apr 20, 2024
sillar68
Apr 20, 2024
1,714 Posts
Sweet. I'll put a couple in a go bag. Give a couple to family.
Expert
This user is an Expert in Grocery
Apr 20, 2024
1,831 Posts
Joined Jul 2012
Apr 20, 2024
busybugsy
Expert
This user is an Expert in Grocery
Apr 20, 2024
1,831 Posts
Quote from gastoncards :
Not going to trust my life or families on some unknown Chinese imposter brand that purposely attempts to make people think they are legit life straws. They are intentionally trying to be deceptive. Just my opinion based on field use in 8 countries and having my life depending on a water filter.
A great fear based logic. Let's all make fear based decisions and ignore experts and science.
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Apr 20, 2024
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Apr 20, 2024
brucedc
Apr 20, 2024
1,037 Posts
Quote from mcjiver :
I hope to shed some light as I have worked in this industry for several companies. To those who are worried about it being an unknown brand: the filter media design and material are going to be the same in all these straw tube-style filters. They are extremely cheap to manufacture but early adopters and well known brands charge more because they market better. They should not effectively expire if they are kept out of damp or humid conditions. On that same note, best practice is to back flush with clean water after use or every 20-30 gallons during active use as the media does plug up and contaminants need to be released. Always shake them dry between use and don't store them in something air tight.
Sorry, that was long winded.
Why not store these in an air tight vacuum? Would that keep the humidity away which would allow this to last longer?

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