Home [Powder Technology, Inc.] About PTI: Specialists in Materials Processing Processing Services: Food Grade Processing to Cryo-Milling Materials Processed: Range from Super Abrasives to Plastics and Resins Material Safety Data Sheets: Safety Sheet PDF downloads Products & Analysis: Leading Manufacturer of ISO Grades of Test Dust --- Sieve Size Analysis --- Iron Oxide Fractions --- Graded Crushed Quartz Fractions --- Arizona Test Dust Fractions Test Dust: The History of Test Dust --- AC Spark Plug Involvement --- PTI Began Developing Test Dust in 1982 --- ISO Standard 12103-1 --- Comparison of AC Spark Plug and ISO Test Dusts News --- Case Studies: PTI Succeeded Where Others Failed with a High-Density Crystalline Material Frequently Asked Questions Request For Quote Contact