Particle Measuring Systems from the United States is a world-leading company and manufacturer of cleanroom AMC micro-pollution monitoring analyzers. PMS actively invests in R&D, and provides customers with accurate and reliable measurement results based on cutting-edge technology. It also sat on the leading position of global clean room particle counters and pollution monitoring industries.

Its main products are AS-II gas analyzers and related calibration devices, which can measure gases such as Ammonia (NH3), Amines, TA (Total Acids), and Chlorides (HCI+CI2), and can measure and analyze gas concentrations at ppt level. PMS also customized measurement options such as single-point/multi-point/moving car sampling, that can more effectively monitor the clean room AMC micro-pollution source.  

Product	Model	Description	Key Features
	Air Sentry II Analyzer	NH3, Amines Gas Analyzer	■Detectable Gas： NH3, Amines, 　　　　　　　　　TA (Total Acids) , Chlorides ■ Point of Use ■ Applicable for manifold ■ LDL: 70ppt or lower ■ Accurate measurement, fast reaction, uninterrupted data ■ Compact size allows placement in any location ■ Infrequent preventative maintenance
		Total Acids Gas Analyze
		Chlorides Gas Analyze
	Air Sentry II Calibrator	Gas Analyzer Calibrator	■ Set zero/span calibration standard. ■ Can be used for multiple AS-II to assure the measurement consistency. ■ Can Calibrate based on the ambient humidity conditions.
	Mobile Cart	Mobile Cart AMC Monitoring Equipment	■ Mobile design, can pair with 1-3 AS-II analyzer ■ Gas monitoring in cleanroom ■ Monitor potential/existed leak ■ With zero air system, for measure and calibration use ■ Designed with high mobility to monitor locations flexibly when needed. ■ Powered by USB/fixed power supply ■ Touch panel, easier data storage and delivery