/diy/ - Do It Yourself

>>2772154
>chemistry labs sometimes use slate
Chemistry lab countertops are soapstone, not slate.
And I think it'd cost more than a steel countertop.

webstaurantstore dot com (pic related) is usually good for food service products, I've used them for tables and chairs.
Looks like their stainless steel counters are 304 stainless, which according to >>2772156 may not be what you need.
But if you're using it mainly for food, that's probably where I'd start.