SMC In Line Filters represent the highest standard for filtration available for compressed air purification products. 99% water droplet removal and particulate filtration as low as 0.01 micron provides you with dry, clean, compressed air for whatever your needs may be. SMC is a member of the Compressed Air and Gas Institute and all of their products undergo rigorous testing to ensure quality and performance. Check out our online inventory of Pre-Filters, Post-Filters, Water Separators, Air Regulators, and replacement Elements.