NSF/ANSI 401 certified

Replacement filter · NSF/ANSI 401 certified

Same filter. No pitcher.

For Osma owners who just need a refill. Same media stack as the original bundle filter — 4 stages, NSF/ANSI 53 + 401 + P473. Fits every Osma Glacier 1.8L pitcher.

~4 months per filter · ~150 gallons
Same NSF certification · lead, PFAS, microplastics, fluoride
Easy install · rinse, twist in, ready in 5 minutes

$60 Free US shipping over $50

30 days to return — we pay shipping back Free US shipping over $50 Auto-reminder when due

Same NSF/ANSI 401 As certified on the original pitcher

Third-party verified Re-tested every year

Ships in 24 hours From our US warehouse

30-day return Unopened, we pay shipping

— 01 The filter does the work

Same media. Same removal. Every refill.

4-stage filter stack — pre-filter, carbon block 0.5 µm, KDF + ATS redox, selective ion exchange.

Lead, gone

99.1%

NSF/ANSI 53

Carbon block + KDF/ATS redox media bind heavy metals out of every pour.

PFAS, below detection

< 0.5 ng/L

NSF/ANSI 401

Same 15-compound panel certified on every Osma filter we ship.

Minerals stay

~95%

Mg + Ca retained

Selective ion exchange keeps magnesium and calcium — water tastes alive.

— 02 Install in 5 minutes

Rinse. Twist. Pour.

Same install as your first filter. No tools, no plumbing.

Install steps · 4:5

01

Rinse 30 seconds

Run cold tap water through the filter to wake the media.

02

Twist 1/4 turn

Drop into the pitcher reservoir, twist clockwise until it seats.

03

First pour discard

Fill, pour out the first pitcher to flush. Second pour is ready to drink.

04

Reminder auto-email at 3.5 months

We email you before the filter wears out. No subscription required.

— 03 Honest answers

Quick questions.

Does this filter fit my Osma Glacier 1.8L pitcher?

Yes. Same filter that ships in every Osma bundle. One filter cartridge, one model — fits every Osma Glacier 1.8L pitcher made since launch.

How long does one filter last?

150 gallons or ~4 months for a family of four. We email a replacement reminder at 3.5 months automatically. Hard-water markets (Phoenix, Las Vegas, Dallas) may see ~110 gallons — see the 3-star review on the main pitcher page.

Is this the same as the filter in the pitcher bundle?

Yes. Identical SKU, identical media stack, identical NSF certification. Buy the bundle if you don’t own a pitcher yet, buy these refills if you do.

What does "third-party verified" mean for replacement filters?

We test the production line annually. Same protocol as the original certification: NSF/ANSI 53 + 401 + P473 by an independent accredited laboratory.

Can I cancel an auto-reminder email?

Yes — one click from your account or any reminder email. No subscription, no auto-billing, no minimum.

Bulk-buy — is the 4-pack really cheaper?

Yes. 4-pack works out to $28 per filter vs $32 single, $30 in 2-pack. ~16 months of filtered water per 4-pack — one purchase per year and change.

Don’t own a pitcher yet?

You need the pitcher first. Shop the pitcher bundle →

— 04 Stock up

One twist. Four months of filtered water.

Free US shipping over $50. We email a reminder before yours runs out. No subscription required.

30-day returns · Free US shipping over $50 · Auto-reminder

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