96.6
Best for long distance thru-hikers and weight-conscious backpackers
- Removes 99.999999% of bacteria
- Filters up to 100,000 gallons
- Fits standard soda and water bottles
$46
Head to head · Water Filtration
Personal Water Filter Straw S1 4 Pack Blue vs Official Replacement Water Filter Removes
Ravvy scores Personal Water Filter Straw S1 4 Pack Blue at 93.66 and Official Replacement Water Filter Removes at 89.89. Personal Water Filter Straw S1 4 Pack Blue takes the overall pick, best for backcountry hikers, international travelers, and disaster preparedness kits.
Ravvy pick
Membrane Solutions
Personal Water Filter Straw S1 4 Pack Blue
93.7
$30
The Membrane Solutions S1 is a must-buy for budget-conscious adventurers who want verified safety certifications and bottle-compatible versatility in a four-pack format.
89.9
$31
Choose these filters if you want the absolute purest water available in a pitcher format and are willing to accept a shorter filter lifespan in exchange for zero TDS levels.
How they score
| Factor | Personal Water Filter Straw S1 4 Pack Blue | Official Replacement Water Filter Removes |
|---|---|---|
| Flow Rate | 82 | – |
| Longevity | 95 | – |
| Portability | 98 | – |
| Versatility | 88 | – |
| Filtration Precision | 91 | – |
| Value for Money | – | 75.5 |
| Filter Longevity | – | 65 |
| Filtration Power | – | 98.5 |
| Taste Neutrality | – | 96 |
| Contaminant Removal | – | 97 |
Personal Water Filter Straw S1 4 Pack Blue
What owners praise
- Impressive 1,320-gallon filtration lifespan
- Versatile 28mm threading for bottle attachment
- Independently certified to NSF/ANSI standards
- Ultralight at just 2 ounces per straw
- 5-stage filtration improves taste and odor
What to know first
- Does not reduce TDS or salinity
- Requires significant suction for the first use
- Flow rate slows quickly in very silty water
Skip it if people needing to remove dissolved minerals or salt from water
Official Replacement Water Filter Removes
What owners praise
- Eliminates 99 percent of Total Dissolved Solids
- Certified to reduce PFOA and PFOS chemicals
- Removes heavy metals like lead and mercury
- Provides a crisp and neutral water flavor profile
- Compatible with all standard ZeroWater pitcher models
What to know first
- Relatively short lifespan in hard water areas
- Higher cost per gallon compared to carbon filters
- Filter speed slows down as it reaches end of life
Skip it if budget conscious users with very hard water who dislike frequent filter changes
Specs side by side
| Spec | Personal Water Filter Straw S1 4 Pack Blue | Official Replacement Water Filter Removes |
|---|---|---|
| UPC | 850071881745 | 737989664540 188781000171 |
| ASIN | B07SYYQZDN | B001CUQ1C8 |
| GTIN | 850071881745 | 737989664540 188781000171 |
| Brand | Membrane Solutions | – |
| Capacity | 1320 gallons | – |
| Material | Plastic | Plastic |
| Brand Name | Membrane Solutions | ZeroWater |
| Model Name | gear | – |
| Unit Count | 4 Count | 2 Count |
| Item Weight | 2 ounces | 1.3 pounds |
| Part Number | water filter straw | – |
| Manufacturer | Membrane Solutions | Zero Technologies, LLC |
Other options in this category
93.6
Best for health-conscious families and diy homeowners who dislike the taste of flat ro water
- Alkaline Remineralization Stage
- 75 Gallon Per Day Capacity
- Transparent Sediment Filter Housing
$235
93.5
Best for group campers, rv owners, and emergency preppers
- 400 Gallon Total Capacity
- NSF 60 Certified Formula
- 30-Minute Rapid Action
$33