Soil (dirt) trap for a Lab

I've been asked to find a soil trap to put under a sink in a lab where the research is on soil. Long story short they don't want to deal with the soil samples outside so they will be brought in and rinsed in the sink. What I need to find is a couple of companies that make this sort of thing. Also this trap needs to be fast and easy to clean by a person knowing nothing about plumbing. Right now we have small bottle traps but I don't think they will hold up to the new use.

Any suggestions on where I can find something like this?

J R Smith used to make 1 1/2" "sediment traps" for undersink use, but I don't see them in their current catalog. Wade, Zurn, or Josam probably still have them. They have a plug, or cover, on the bottom to drain the captured material out.