Will this work with ocean (salt) water as well?

No, for salt water, you need to desalinate the water, easiest way is to make a simple solar still.

Which brands of filtered bottled water is compatible with this water filter screw?

I don’t know. Personally, I wouldn’t buy a filter to use with filtered bottle water.

My life straw came just loose in the shipping envelope. No box, no plastic around it, nothing. Is that how they normally ship?

No, not at all Mine came wrapped and in a cardboard Tube AND then it was in a box lol Yours sounds like you purchased a LIKE NEW product from a reseller(3rd party) or maybe you selected the environmental friendly delivery option. Even though you should take pics for proof and discuss with Amazon Shipping or whoever sold it to you.

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LifeStraw Peak Series Personal Water Filter for Hiking, Camping, Travel, and Emergency Preparedness, 1 Pack, Mountain Blue

LifeStraw Peak Series Personal Water Filter for Hiking, Camping, Travel, and Emergency Preparedness, 1 Pack, Mountain Blue

Product ID: 409809925

Details

Brand
LifeStraw
Capacity
4000 Liters
Included Components
Filter straw
Installation Type
Freestanding
Material
Plastic
Package Information
Bag

💧2.5L/min fast flow

⛰️Built for rugged extremes

🛡️99.999999% bacteria removal

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MOP$378

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Sold byAmazon MacauDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💦 Sip Smart, Adventure Hard: Your Ultimate Outdoor Hydration Hack

RUGGED READY - Durable, leak-proof design built to survive drops, pressure, and harsh conditions
LONG TERM LIFESAVER - Filters up to 1,000 gallons (4,000L) — that’s 5+ years of daily clean water
VERSATILE ON THE GO - Attach to bottles or gravity hoses for flexible hydration options wherever you roam
RAPID FLOW TECHNOLOGY - Enjoy a steady 2.5 liters per minute flow—no more waiting to hydrate
ULTRA CLEAN HYDRATION - Filters 99.999999% of bacteria & parasites for worry-free sipping anywhere

The LifeStraw Peak Series is a lightweight, ultra-durable personal water filter engineered for outdoor enthusiasts and emergency preppers. It removes 99.999999% of bacteria, 99.999% of parasites, and microplastics, delivering clean water at a rapid 2.5L/min flow rate. Designed for rugged use, it fits standard bottles and gravity hoses, providing up to 4,000 liters of safe drinking water—making it an essential, long-lasting companion for hiking, camping, travel, and survival kits.

Specifications

ASIN	B09SBPP9R9
Best Sellers Rank	#1,058 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #7 in Camping & Hiking Water Filters
Brand Name	LifeStraw
Capacity	4000 Liters
Container Type	Bag
Customer Reviews	4.7 4.7 out of 5 stars (5,460)
EU Spare Part Availability Duration	5 Years
Global Trade Identification Number	07640144286293
Included Components	Filter straw
Installation Type	Freestanding
Item Dimensions L x W x H	3.74"L x 2.17"W x 10.43"H
Item Type Name	Outdoor water filter
Item Weight	65 Grams
Manufacturer	LifeStraw
Material Type	Plastic
Maximum Flow Rate	2.5 Liters Per Minute
Model Name	Peak
Model Number	LSPSPMB21
Other Special Features of the Product	Lightweight
Part Number	LSPSPMB21
Power Source	Manual
Purification Method	Microfiltration membrane
Smart Home Compatibility	Not Smart Home Compatible
Supported Water TDS Level Maximum (PPM)	1000
Unit Count	1.0 Count
Upper Temperature Rating	60 Degrees Fahrenheit
Warranty Description	Manufacturer Warranty

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