Particle Measuring Systems (PMS), founded in 1972, supplies contamination monitoring solutions for water, chemical, airborne and molecular applications within the microelectronics industry. The company is the largest speciality particle counter manufacturer in the world, providing detection of particles >20nm in ultrapure water or chemicals, and >100nm particles in air and gas. PMS also provides services including monitoring systems software, training, data management and calibration. PMS is part of Spectris, experts in precision measurement techniques for materials analysis.