Optical Bean Sorter

Bean Sorting

You may have seen Optical Bean Sorters appear on roasters websites and instagrams over the past while.

Bean sorting is not new and has been prevalent at farms when processing for years.

Using these machines in roasting facilities however is a new phenomenon.

Our new model not only sorts quakers https://mtpak.coffee/2022/05/everything-you-need-to-know-about-quaker-coffee-beans/ but insect damaged or misshaped beans.

Using AI TECHNOLOGY this sorter “learns” which beans are acceptable and which the user would like to reject.

Why are there quakers though if we only use Specialty coffee?

There is a very specific set of rules and parameters as to what specialty coffee is and how it is sorted and graded.

Anybody who has undertaken Q grading or Green Coffee Modules with the SCA knows this only too well.


Quakers, stones and defects are just part of the coffee cycle.

Denying they exist or not using the correct equipment is going to damage equipment in the long run.

New innovations in processing are seeing more natural coffees, more anaerobically produced coffees and generally more experimentation.

These experimental coffee lead to unknowns and further possibility of foreign objects due to the nature of their processing.

Here at Silverskin Coffee we are continually reinvesting in our roasting plant and technology!

We want to ensure you and your customer receive the very best cup of coffee.

Using experience built up over almost 30 years experience of roasting and coffee manufacturing.

We have continually reinvested in technologies such as, the Ikawa sample roaster for QC and cupping, the ROEST sample roaster for micro espresso batches (something we found hard to replicate with the IKAWA).

Our bespoke packaging machine and packaging with one way valve. Our Wally Milk assistant and Stay fresh cylinders with peel tech. Both production roasters are fit with state of the art destoners to ensure any debris is removed BEFORE we use the sorter.

How does the sorter work?

There are 68 channels which transfer the beans to a camera, this Nikon camera is assisted using a LED light source (German Osram’s lamp).

Toshiba CCD sensor, the pixel can reach 200 million pixels, which can accurately identify materials and reduce the machine identification error rate.

All easily handled and programmed through a remote control tablet, can be used as an interface with iPhone 😮‍💨😮‍💨

Enjoy your coffee