Porous Ceramic products

I am interested in your Porous Ceramic products. However, I could not find the list of materials from where I could order. I am looking for ceramics that have porosity range from 10% to 20% with different pore sizes. Also, another porosity range is from 40% to 50% with varying pore sizes.
Could you please inform me where can I find this specific information on your website? My primary goal is to study the effect of porosity and pore sizes at different combinations. Any product suitable for filtration should work for me.
Thank you in advance.