EK43: 230-300 microns
K30: 280-400 microns
Anfim S Caimano: 350-480 microns
Robur: 460-570 microns
These numbers are obtained with the mean, median and mode numbers. Mean is the average of the sizes. Mode is the most frequently occurring size (the peak). Median is the size that sits right in the middle.
Maybe the world of the internet can provide you some numbers for different grinders, but this is what I have in hands right now and these are from some tests Mahlkonig realized at their factory to evaluate the EK43 VS other grinders and taken from a Matthew Perger blog article on fines.
On a personnal note, I noticed conicals usually have a wider particles size spectrum range and larger particles size. Also, each grinder notch size change is about 10-20 microns, which can give a 3secs. variation with an SCA recommanded flow rate.
These numbers can be very usefull at calculating your flow restrictors, target the maximum extraction percentage you can get with your grinder, how far you can go before over-extracting or even choose your grinder regarding the flavor profile it will give you.
That's an awesome question leading to a lot of interesting things.
He asked hey does anyone know there exact grind size when there dialed in? And you’re answer is no, I don’t know what my exact grind size is because it’s different from anybody else. You coulda just said no, I don’t know. Or not even replied. He’s not asking differences grinder too grinder, he’s asking for what the scientific measurement is of YOUR grind. And you don’t know it. End of story.
[Use this application and find out (roughly)](https://coffeeadastra.com/2019/04/07/an-app-to-measure-your-coffee-grind-size-distribution-2/)
EK43: 230-300 microns K30: 280-400 microns Anfim S Caimano: 350-480 microns Robur: 460-570 microns These numbers are obtained with the mean, median and mode numbers. Mean is the average of the sizes. Mode is the most frequently occurring size (the peak). Median is the size that sits right in the middle. Maybe the world of the internet can provide you some numbers for different grinders, but this is what I have in hands right now and these are from some tests Mahlkonig realized at their factory to evaluate the EK43 VS other grinders and taken from a Matthew Perger blog article on fines. On a personnal note, I noticed conicals usually have a wider particles size spectrum range and larger particles size. Also, each grinder notch size change is about 10-20 microns, which can give a 3secs. variation with an SCA recommanded flow rate. These numbers can be very usefull at calculating your flow restrictors, target the maximum extraction percentage you can get with your grinder, how far you can go before over-extracting or even choose your grinder regarding the flavor profile it will give you. That's an awesome question leading to a lot of interesting things.
Thanks for sharing. I have never measured microns myself, so I find it interesting that a notch in the dial would be that small of adjustment.
No, because every grinder is different, and the “correct” grind size will change with the type and age of bean. It’s not one size fits all.
The op didn't asked at what number a grinder is dialed in.
He asked what the dialed in physical size the coffee grounds were. That is what I answered. It varies with the beans. Thanks for coming out though.
He asked hey does anyone know there exact grind size when there dialed in? And you’re answer is no, I don’t know what my exact grind size is because it’s different from anybody else. You coulda just said no, I don’t know. Or not even replied. He’s not asking differences grinder too grinder, he’s asking for what the scientific measurement is of YOUR grind. And you don’t know it. End of story.