SCA certified grinders: the standard exists, the list is empty

Search for “SCA certified grinders” and — on the day I checked — the first grinder in the results lives on an SCA web address, carries “SCA” in its title and “certified” in its text. It is the Moccamaster KM5, and it is not SCA certified. The page is an entry to the SCA’s Best New Product Awards, the words are the manufacturer’s, and the certification they mention was issued in Norway.

That one result is the whole search in miniature. There is no such thing as an SCA certified grinder. What there is instead is stranger, and more useful: a certification standard that nothing has been certified under, a tab for grinders on the SCA’s certification page that appeared this summer and has since been hidden, and a laboratory in Oslo that does approve grinders — the same lab the SCA sends its own tests to — which has passed eight of them.

Below is what each of those things is, what the test actually checks, why the SCA’s version of it is the lighter one, and — because a certificate was never going to choose your grinder for you — which parts of it you can run on your own counter this week.

Affiliate links. Some links below go to Amazon. If you buy through one I earn a commission at no extra cost to you, and it never changes which product gets named or what the measurements say. Full disclosure.

What the SCA actually certifies

The SCA runs two certification lists, and I read both in the page source on 24 September 2026:

Two of the sixteen coffee makers do have a grinder inside: GE Profile’s Smart Grind and Brew and Café’s Specialty Grind & Brew. GE’s launch announcement called the Café model “the industry’s only Specialty Coffee Association (SCA) Certified specialty coffee maker that includes a built-in grinder,” and on a shelf that sentence reads a lot like a certified grinder.

It isn’t one. The certificate belongs to the coffee maker. The standard it passed, SCA 310-2021, never uses the word “grinder” — I searched the full text — and its brewing tests start from coffee ground to a particle distribution the standard specifies for itself. What the lab did with the machine’s own burrs, if anything, has not been published.

The commercial side was supposed to include grinders. When the SCA launched that programme in June 2021 it said it would review “commercial coffee brewers, coffee grinders, espresso grinders, and espresso machines,” and made certification the ticket to bid for equipment sponsorships at the World Coffee Championships. Five years on, the list holds five espresso machines. And the grinder the SCA picked for its own World Brewers Cup stage from 2026 to 2029, announced in December 2025, is billed as the “Qualified Filter Grinder” — qualified, not certified. (It is Option-O’s Lagom 01.)

The standard exists: SCA 320-2021

The document is SCA Standard 320-2021, Home Coffee Grinders: Specifications and Test Methods. Seven pages, copyright 2022. From 2022 until at least May 2025 the SCA’s standards page offered it as a free download; today the same page files it under “Certification Standards” and marks it members-only. I read the Internet Archive’s copy of the SCA’s own file.

Two sentences in it matter more than the rest. The first is in the preface:

“This SCA standard is derived from the ECBC Coffee Grinder Certification Standard issued in April 2021, which has been adapted to current SCA Standards format.”

The second is the scope:

“This standard covers the specifications and test methods for coffee grinders designed for home use and designed to achieve a grind suitable for atmospheric pressure brewing, namely using an electric coffee brewer. Espresso grinders are excluded from this standard.”

It was written by an expert group that included the ECBC’s technical manager, five equipment makers — HEMRO, OXO, Baratza, Breville and Technivorm — and Sympatec, a company that builds particle-sizing instruments. Here is what it asks of a grinder:

Notice what is not in the table. The word “burr” appears once in the whole document, in an instruction to start the heat test with the burrs at room temperature. “Blade,” “conical” and “flat” do not appear. Nothing about burr size or material, the number of steps, or how fine the grinder can go. The grind test is passed at a single setting.

So the bar is this: produce one good drip grind, don’t cook it, don’t hoard it, don’t drift, and print a sensible manual. That is a reasonable bar for a drip grinder. It just isn’t what people picture when they type “SCA certified grinder.”

And the SCA never said the standard was a certificate waiting to happen. In April 2022, while 320 was still under review, its technical officer set out the rules its standards are written under:

“The SCA’s standards shall be completely voluntary… This means certification is not the goal of the standard developing system, though the certification of some standards might be done directly by the SCA or licensed to a third-party certification body, when such a certification system is in the best interest of the community.”

The same article commits the SCA to updating each standard every five years — which puts 320, approved in 2022, up for revision around 2027.

A tab for grinders, and nothing behind it

Earlier this year the SCA’s certification page changed its name from “Certified Home Brewers” to “SCA Certified Home Equipment.” Then, some time between 11 July and 5 August 2026 — those are the Internet Archive’s copies on either side of it — a pair of tabs appeared in the page’s code: Home Brewers and Home Filter Grinders. By 18 September a line of CSS was hiding them. On 24 September they are still in the source, and still hidden.

Behind the grinder tab there is no grinder. The section holds a copy of the page’s “newly certified” banner for the GE Cafe Specialty Drip Coffee Maker.

I am not going to read tea leaves in a web page’s source code. A hidden tab is not an announcement, and nothing on the page says when, or whether, a grinder will go behind it. What it does tell you is that today the answer to “which grinders are SCA certified?” is none — and that the empty shelf for them has already been built.

If one does arrive, this is the deal it will have signed. An SCA company membership to apply, testing at the SCA’s third-party lab, a report within about two weeks whether it passes or not, and a three-year licence at USD 5,000 a year.

The lab that does approve grinders

The SCA’s own certification page names its testing centre: “Only equipment that is fully evaluated at our third-party testing centre (ECBC.coffee) is considered for certification.” That is the European Coffee Brewing Centre, founded in 1971 by the Norwegian Coffee Association and testing coffee makers since 1975. Since 2023 it has run every test for the SCA’s home programme, in Oslo.

It also runs a grinder programme of its own, and has since June 2021. Its launch announcement gave the reason without much diplomacy:

“In the market of home coffee equipment, there is a large element of blade grinders sold as coffee grinders. Customers with little experience or knowledge are not necessarily aware that they «crush» the coffee beans instead of cutting them into even particles.”

Here is everything on its approved list today:

Eight grinders in five years, and five of the eight come from two Norwegian companies. That says more about which manufacturers have chosen to knock on a lab’s door in Oslo than about which grinders are good, and it is worth reading the list in that light.

One entry needs a warning. Fellow launched the Ode Gen 2 in November 2022, and its own announcement leads with “Brand New Burrs.” The ECBC’s licence says an approval lasts five years “or until the design of production models change, whichever occurs sooner,” after which the model must be retested. The ECBC still shows the Ode under its original name, next to a photograph uploaded in 2021, and does not list the Gen 2 separately — although it does give Wilfa’s follow-up to the Uniform, the Uniform Evo, an entry of its own. Nowhere does it say which generation of the Ode the approval covers. If that is the grinder you are weighing up, ask Fellow before you count the seal.

A seal also cannot tell you the one thing you would most want to know, which is by how much a grinder passed. The ECBC’s test agreement is explicit that results stay with the manufacturer: the lab “may not publish, disclose, or share any test results or reports” without the manufacturer’s written consent. You see a pass. You never see the score, and you never learn which grinders failed.

What the seal costs the maker, for comparison: €1,000 for the test, then €1,000 a year for a licence that runs five years. The lab keeps the right to run a random retest during that time, and to withdraw the approval if the model no longer passes.

Same lab, two tests — and the SCA’s is the lighter one

The SCA says 320 is derived from the ECBC’s April 2021 standard. The ECBC’s version, as the Internet Archive recorded it in August 2021, is word for word the one on its site today. Put the two side by side:

Three of those rows are the SCA asking for less: a third of the hopper, a tenth of the endurance run, and no brewing test at all. The fourth is a different target. The two grinds are not invented from nothing — they are the two brewer-test grinds in Table 2 of the SCA’s own coffee maker standard. The ECBC aims at the one for cone-shaped baskets. The SCA’s grinder standard aims at the one for flat-bottomed baskets, rounded to 600 and 1,200 µm.

Why the SCA changed those things is not published, and I can’t tell you why no grinder maker has taken the SCA’s version while five have taken the ECBC’s. I can tell you the price of each, which is above. One small thing I did notice: the ECBC’s page labels 1.5 g of a 30 g dose as “2,5%.” It is 5%, which is what the SCA’s version says.

For espresso, the only seal is Italian — and it tastes

Both of those standards stop at filter coffee. The SCA’s excludes espresso grinders in so many words, and nothing for espresso grinders is among the standards it has in development.

The one scheme I found that does put a seal on espresso grinders is Italy’s. The Istituto Espresso Italiano was founded in 1998, its members are roasters and the makers of espresso machines and grinders, and its “IEI Qualified Product” mark covers espresso blends, machines and grinders. Its member pages name the grinders that carry it:

These are café grinders — “grinder-dosers” in the institute’s own word — from its member companies, and the test is not a sieve. The institute certifies how the espresso tastes. Everything under its mark “is regularly tested by a panel of expert tasters,” its booklet says, and “coffee machines, grinder-dispensers and blends are tested at regular intervals to guarantee the consistency of the sensory profile set forth by the standard” — a 25 ml cup, sour and bitter in balance, astringency barely there. The same booklet fixes dose, water temperature, pressure and time for that cup. It fixes nothing about the grind.

So it is a real certification, and a narrow one: a grinder’s part in making one defined Italian espresso behind a bar. About particles, retention or heat it tells you nothing, and it was never meant to.

“SCA award-winning” is something else

The other SCA badge you will meet in grinder marketing is an award, and it is a different animal.

The Best New Product Awards are open to exhibitors at the SCA’s trade shows. At this year’s San Diego show, entry cost USD 500, or 1,250 with a media package. Judges with at least five years in the industry score each entry from 1 to 5 on questions like: does it satisfy a specific need, will customers pay for it, does it offer an appealing alternative in form, colour, texture or material, is there a clear sustainability message. Finalists pitch on a stage, and attendees vote for a People’s Choice winner.

Nothing in those criteria is sieved, weighed or measured. Grinders that have won include Fellow’s original Ode Brew Grinder and Weber Workshops’ Key in 2021, Goat Story’s Arco in 2022, and Timemore’s Millab M01 in 2026. Those are real awards for real products — for being new and useful, not for passing a test of the grind.

That first search result belongs to these awards. The KM5 page on new.sca.coffee is an entry — one of an unlimited number an exhibitor may submit — and the certification it mentions is the ECBC’s.

Certifications that don’t exist

Some pages that rank for these searches go further than confusing an award with a certificate. On 24 September 2026, pages ranking for questions about Baratza’s grinders cited an “SCA Brewing Standard #502,” a “2023 SCA Home Grinder Standard v2.0,” a certification requirement of ”≤±0.5% TDS variance across 10 consecutive brews,” and a quotation from an “SCA Research Fellow & Lead Grind Science Advisor” of a “2023 SCA Grinding Standards Task Force.”

None of it exists where the SCA publishes its standards. The SCA’s index has nine published standards on it, and the only one about grinders is 320. There is no 502. SCA 320 contains no TDS requirement of any kind. And the people who actually wrote the SCA’s grinder standard are listed by name on its third page; that title is not among them.

The fix takes a minute. When a page quotes an SCA standard number, open sca.coffee/research/coffee-standards and look for it. The list is short, and it has no espresso grinder standard on it — not published, and not among the four in development.

Run the SCA’s test on your own grinder

A certificate is someone else’s measurement, kept private. The useful thing about 320 is that its tests are written down, and some of them are kitchen tests.

Retention is the easiest and the most telling. Weigh 30 g of beans, grind them, weigh what comes out. Do it ten times and average the difference. Over 1.5 g and your grinder would fail the SCA’s own bar. The standard then asks for everything left inside after ten rounds of 60 g to be collected and weighed, with 3.0 g as the limit. You need a scale that reads to a tenth of a gram for any of this; on one that counts in whole grams the whole test vanishes into rounding.

Heat is two readings: the beans just before grinding and the grounds just after, 50 g, with the burrs at room temperature to begin with. More than 10 °C and it fails.

Grind distribution is where a kitchen stops being a lab. The standard wants an air-jet sieve, a laboratory instrument, run at 3,000 Pa for three minutes a screen. Hobby sieves get you partway: the Kruve screens that Royal Coffee used to compare five EK43s included both 1,200 µm and 600 µm, which are exactly the SCA’s two boundaries. But dry shaking is not air-jet sieving, a sample took them four passes to clear seven screens, and what those numbers do and do not mean is a whole article on its own. Treat the result as a direction, not a verdict.

Consistency you can watch without sieving: note your brew time at one setting across a few bags. A grinder that drifts will show it there first — and so will a change of roast, so write that down too.

The manual you can check before you spend anything. The SCA’s standard makes it give a drip setting, a ratio and cleaning instructions, and the ECBC asks for much the same. Moccamaster’s KM5 page, for instance, names the ECBC-approved setting for its own brewers: 5.

Where the numbers do exist

The thing a certificate would show you — how a grinder’s particles are actually distributed — has been measured and published, just not by anyone selling a seal.

The largest set I have found is 300 particle size distributions from 24 espresso grinders, measured at the Zurich University of Applied Sciences on a Camsizer X2 and analysed by Jonathan Gagné. It is not peer-reviewed, and it is espresso rather than filter, but it is public, with the method shown. Its most useful finding is that dialling in espresso mostly means dialling in the amount of fines. It is also the only large set I found that splits grinders by burr shape, and what it says about conical versus flat burrs is less tidy than the marketing. And a study of five EK43s found four units of the same model agreeing within 1.54% standard deviation, screen by screen. I went through what those measurements mean for taste in a separate piece, and the short version is that the evidence reaches the grind and the flow, and stops short of a blind taste preference.

That is still more than a pass mark behind a confidentiality clause can give you.

What I would actually do

Stop looking for the badge. For a filter grinder, an ECBC seal is a genuine floor — one good drip setting, low heat, low retention, a 6 kg endurance run and a brewing test — and worth something. Check which generation it covers. For an espresso grinder there is no SCA standard at all, and the one seal I found — the Italian institute’s — is a tasting-panel mark on café grinders, so a home espresso grinder whose marketing implies SCA approval is selling you something else.

Read “SCA award” as “new product award.” It says a panel liked the idea. It does not say anyone measured the grind.

Run the retention test in your first week, while you can still send the grinder back. Ten rounds of 30 g on a scale that reads 0.1 g — something like the Hario V60 Drip Scale does it — and you have the SCA’s own answer for your grinder, which is more than any certificate on the market will show you.

And read the manual before you buy. It is the one part of the SCA’s test you can check from your sofa.

The standard exists. The list is empty. The measurement you actually care about, you can take yourself.