AT902 Automated Filter Tester is a universal tester developed in accordance with the standards of NIOSH 42 CFR 84 and EN 149:2009. It is mainly used to detect the filtration efficiency of particulate respirators and the filtration efficiency and resistance of materials. A high-precision photometer is used as the detector to ensure accurate results.

The HY901 Automated Filter Tester is designed as a standalone tester for checking a few filters per day or for integration into an automated, high-volume production line. It has a proven track record of durability, reliability, and minimal maintenance, meeting the demanding requirements of manufacturing and quality control environments over the past ten years. Equipped with two specially designed aerosol generators, it enables highly repeatable and reproducible filter-efficiency measurements. It features a high degree of automation and self-diagnostics that greatly simplify operation, increase throughput, and improve overall measurement performance. As a result, the HY9010 filter tester is ideally suited for QC testing.