World Leaders in Automatic Oyster Grading Technology

With a list of markets that includes Mexico, Canada, the United States, the UK, Ireland, France, New Zealand and of course Australia, SED is the world leader in oyster grading systems. Our graders are made of stainless steel for unmatched durability, and they automatically separate, measure, sort, count and bag your oysters, doing the work of 13 hand graders! Take a look around our website for more information about the products we offer, or call us.  

Learn more about the graders we have to offer, and save the trouble of grading by hand.



In addition to our graders, we offer a wide range of products for your needs.


Learn more about our company and the industry as a whole.


All SED graders are designed with integration in mind

Don’t just take our word for it, though. Read what some customers had to say about our products. 

James Boylan - Boylan Oysters (South Australia)
I’m impressed! We can bring in our product and get it straight out again. It’s better than hand grading by a country mile!

Arno Bros – Great Bight Oysters (South Australia)
The SED machine takes the stress out of grading and speeds it up.

Steve Pope – Biomarine (New Zealand)
We purchased the machine to save labour – it has done just that.

Tony Byrne – Greenfields (Tasmania, Australia)
Performed to our expectations and above.
Very happy that all four components of our system arrived and were operational in a short time without hitches, - excellent.

Brian Leahy – St Helens Marine Farmers Rep (Tasmania, Australia)
Provides extremely accurate sizing and counts at all stages ensuring better growing / condition / quality - and therefore lifting overall production which uses up the surplus labour.

The grader has consistent throughput of about 1200 dozen – 1400 dozen per hour.

Contact Us

Contact Us

Automatic Oyster Grading Systems
Seed & Juvenile Graders
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