I'm trying to get a small block of ceramic honeycomb for a special project, but apparently it is a fairly scarce product. Even ebay's got nothing. There are a couple manufacturers, but as far as I can tell, they don't do direct sale of single units.
Here are the requirements:
1) Low pressure drop
2) No toxic coatings
3) Square or circular/ellipsoidal face
4) ~ 60x60mm - 120x120mm face area
5) 60mm - 180mm depth
What is they best way of going about getting a sample from a manufacturer?
-or-
Are there any commercial products that use ceramic honeycomb that can be cannibalized? Catalytic filters?