Grind standards?

[MikeW]

I was wondering if anyone here knows of a tool(s) to be used for setting grinders. Say for instance I wanted to know for sure that my Perc setting is actually a Perc grind.

I''m sure everyone here knows of the Agtron color standards. Is there a tool out there similar to this (pictures or screens?) for grinds?

Thanks

 

[CafeBlue]

Graduated sieves - they work like the screens for sorting green beans by size. The sieves are kind of pricey and usually are designed for use with a sieve shaking machine (common brand is Ro-tap, so frequently people call them Ro-tap screens), but hand-held sieves are available.
Your grinder supplier should be able to help you out, they likely have a system or at least a set of sieves. They might allow you to use theirs at their facility or may offer to evaluate your grind samples for you.

 

[Jackson]

If you have an adjustable burr grinder, set the grinder to it's finest setting. Then adjust the burrs until they start to touch each other, (it will start to make a slight clinking noise). Then back the adjustment back til you do not hear the noise anymore. Now you have a calibrated grinder. It may not be as percise as you could get it with a graduated sieve, but it should work great for a perk.