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Grayl UltraPress Purifier vs Platypus GravityWorks 4L

Weight and specs compared for 2026 — and which one to choose.

No winner on weight yet. The recorded weights have not both been verified on the same basis. Size, included parts and single-item versus pair weights can differ. Check the linked sources before choosing a replacement.

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Spec Grayl UltraPress Purifier Platypus GravityWorks 4L
Weight 354 g · 0.354 kg · 0.78 lb
as listed (16.9 oz UltraPress Purifier, Nature edition)
 163 g · 0.163 kg · 0.36 lb
Brand Grayl Platypus
Category Hygiene Hygiene
Grayl UltraPress Purifier
354 g

Press-style 16.9oz bottle purifier using electroadsorption and activated carbon; removes viruses, bacteria and protozoa.

See it in your base weight → Full details →
Platypus GravityWorks 4L
163 g

Gravity-fed water filter system for camp use.

See it in your base weight → Full details →

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Grayl UltraPress Purifier vs Platypus GravityWorks 4L: which should you buy?

The listed weights alone are not enough to choose between these products. Confirm the size, included parts and weight basis against each source; choose equipment for the function and fit you need.

See where both rank against everything else in this category on the lightest hygiene page, or browse the full gear weight database.

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