Is there a shelf life on these if they aren't needed for years?

properly stored in a non freezing temperate environment,they should store indefinately in original packaging and unopened/unused

how can I calculate how many gallons were used in order to switch to another one?

Calculate?? I’d say when it’s time to switch when it gets harder to suck or push water through the straw!!! However don’t forget you can back-flush them if you have the syringe from Another water filter.

does this make saltwater drinkable?

No, you need a reverse osmosis desalination system.

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2 High-Capacity Emergency Water Straws – Lightweight, Reusable, 1800-Gallon Filters for Camping, Hiking, Travel, Biking, Survival, and Emergencies. No Expiration Date, Perfect for Preparedness

Product ID: 466344796

Details

Brand
Practical
Capacity
1100 gallons
Included Components
User Manual
Installation Type
Freestanding
Material
Plastic
Package Information
Bag

💧1800 gallons filtered per straw

🦠>99.99% bacteria & parasite removal

⚖️Only 2oz lightweight design

$89.08

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Description

💦 Sip Smart, Survive Strong — Your Ultimate Hydration Lifeline

FEATHERLIGHT COMPACT - At just 2oz and 8 inches long, carry clean water anywhere without the bulk.
ULTRA LONG FILTER LIFE - Each straw filters up to 1800 gallons—stay hydrated for years without replacement.
EMERGENCY READY DURABLE - No expiration date and includes a backflushing plunger to extend filter life—perfect for any survival kit.
MEDICAL GRADE PURIFICATION - Removes >99.99% of harmful bacteria, parasites, and microplastics down to 0.1 micron.
FDA COMPLIANT CHEMICAL FREE - Crafted from BPA-free materials meeting strict US FDA standards for safe, pure hydration.

These Practical Survival water straws offer lightweight, reusable filtration capable of purifying up to 1800 gallons each. Designed for outdoor enthusiasts and emergency preparedness, they remove over 99.99% of bacteria, parasites, and microplastics, ensuring safe drinking water anywhere. Compact and durable with no expiration date, they come with a backflushing plunger to maintain peak performance, meeting FDA safety standards for reliable hydration on the go.

Specifications

ASIN	B0B72JVNFC
Best Sellers Rank	#690 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #5 in Camping & Hiking Water Filters
Brand Name	Practical Survival
Capacity	1100 gallons
Container Type	Bag
Customer Reviews	4.7 4.7 out of 5 stars (3,310)
Included Components	User Manual
Installation Type	Freestanding
Item Dimensions L x W x H	8"L x 1.5"W x 1.5"H
Item Weight	56.7 g
Manufacturer	Practical Survival
Material Type	Plastic
Model Name	PS12
Model Number	PS12
Other Special Features of the Product	1 Flushing Plunger Included Per Filter, Lightweight
Part Number	PS12
Power Source	Manual Winding
Purification Method	Hollow Fiber Membrane
Supported Water TDS Level Maximum (PPM)	1000
UPC	850031227170
Unit Count	2 Count

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$89.08

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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