Powder Technology Inc. (PTI) was initially formed, and subsequently established roots, in an effort to supply the filtration industry with consistent SAE grade test dust materials. It was determined, from a particle size and composition perspective, material must be consistent and reproducible for many years. After helping write industry standards and locking down the supply chain through the purchase of land in Arizona, PTI is well positioned to provide repeatable ISO test dust material for many more decades. Today, Powder Technology Inc. (PTI) is the leading manufacturer of ISO 12103-1 test dust grades as well as other contaminants used for testing. PTI was instrumental in writing “ISO 12103-1 Road Vehicles – Test Dust for Filter Evaluation.” There are five grades of test dust designated under this specification (ISO 12103-1 A0 (0 To 5) µm Test Dust, ISO 12103-1 A1 Ultrafine Test Dust, ISO 12103-1 A2 Fine Test Dust, ISO 12103-1 A3 Medium Test Dust, and ISO 12103-1 A4 Coarse Test Dust). PTI can also manufacture custom contaminants to meet your testing needs. Please scroll down for further information on all of PTI’s contaminant products.