LifeStraw Family 1.0 Gravity Purifier vs ProOne Big+ Gravity Water Filter
LifeStraw Family 1.0 Gravity Purifier vs ProOne Big+ Gravity Water Filter compared spec-by-spec. Filtration performance, flow rate, pricing, pros, cons, and our verdict on which water filter to buy.
| Specification | ||
|---|---|---|
| Filter Type | hollow fiber membrane gravity purifier | gravity |
| Weight | 1.6 lbs ✓ Winner | 10 lbs |
| Flow Rate | 9-12 L/hr | — |
| Filter Life Gallons | 4,750 | 1,000 |
| Filter Life Liters | 18,000 | — |
| Pore Size | 0.02 micron | — |
| Contaminants Removed | bacteria, protozoa, viruses, turbidity, microplastics | bacteria, protozoa, chlorine, lead, PFAS, microplastics, pesticides, pharmaceuticals, heavy metals, VOCs |
| Requires Power | No | No |
| Virus Removal | Yes | No |
| Bpa Free | Yes | — |
| Backflush Capable | Yes | — |
| Serves People | 1-5 | 4+ |
| Includes Reservoir | Yes | — |
| Reservoir Capacity Liters | 4.5 | — |
| Operating Temp | above freezing | — |
| Capacity Gallons | — | 3 |
| Flow Rate Gph | — | 2.75 |
| Filter Elements Included | — | 2 |
| Max Filter Elements | — | 3 |
| Filter Element | — | ProOne G3.0 7-inch |
| Material | — | 304 stainless steel |
| Height Inches | — | 22.75 |
| Diameter Inches | — | 9 |
| Iapmo Certified | — | Yes |
Buy the LifeStraw Family 1.0 Gravity Purifier
Best prices · Updated hourly
Buy the ProOne Big+ Gravity Water Filter
Best prices · Updated hourly
Who Should Buy the LifeStraw Family 1.0 Gravity Purifier?
The LifeStraw Family 1.0 Gravity Purifier is designed for emergency preparedness, gravity fed cabin, under 100. As a hollow fiber membrane gravity purifier, it removes viruses, bacteria, and protozoa for true purification-level protection.
Key advantages include: true purifier — removes 99.99% of viruses, bacteria, and protozoa at 0.02 microns; 18,000-liter filter life provides years of clean water for a family; incredibly affordable at ~$60 for virus-level purification. At 1.6 lbs, it's better suited for basecamp or vehicle-based use.
Priced at $60, the LifeStraw Family 1.0 Gravity Purifier scores 7.9/10 in our testing — a reliable choice for its price bracket.
Who Should Buy the ProOne Big+ Gravity Water Filter?
The ProOne Big+ Gravity Water Filter is designed for gravity fed cabin, emergency preparedness. As a gravity, it handles bacteria and protozoa — appropriate for most backcountry and domestic use cases.
Key advantages include: iapmo certified to reduce lead, total pfas, microplastics, and chlorine; 3-gallon capacity serves households of 4+ people easily; 304 stainless steel construction is durable and easy to clean. At 10 lbs, it's better suited for basecamp or vehicle-based use.
Priced at $280, the ProOne Big+ Gravity Water Filter scores 8.5/10 in our testing — an excellent performer across our key metrics.
How Do the Specs Compare?
Filter type: The LifeStraw Family 1.0 Gravity Purifier is a hollow fiber membrane gravity purifier while the ProOne Big+ Gravity Water Filter is a gravity. Different filter types suit different scenarios — consider your primary use case when choosing between them.
Filtration performance: The LifeStraw Family 1.0 Gravity Purifier scores higher on filtration at 9/10 versus 9/10 for the ProOne Big+ Gravity Water Filter. The LifeStraw Family 1.0 Gravity Purifier's virus removal capability is the key differentiator — essential for international travel or emergency scenarios where source water quality is unknown.
Filter life: The LifeStraw Family 1.0 Gravity Purifier lasts longer at 4,750 gallons versus 1,000 gallons. Factor in replacement cartridge costs when comparing long-term value.
Portability: The LifeStraw Family 1.0 Gravity Purifier is lighter at 1.6 lbs versus 10 lbs for the ProOne Big+ Gravity Water Filter. For backpacking and wilderness travel, every ounce counts — but for car camping or emergency preparedness, weight is less critical than capacity and ease of use.
Price: The LifeStraw Family 1.0 Gravity Purifier costs $60 versus $280 for the ProOne Big+ Gravity Water Filter — a $220 difference. If the pricier unit offers significantly better filtration performance or longer filter life, the upfront cost difference often pays for itself over time.
🏆 Our Verdict
Choose the LifeStraw Family 1.0 Gravity Purifier if you need a reliable and proven filtration solution , lightweight portability at 1.6 lbs and strong value for the price.
Choose the ProOne Big+ Gravity Water Filter if you prioritize premium features and build quality .
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