Our new Personal Direct Reading Aerosol Monitor is now available!! The HAZ-DUST Model HD-7204 is the first personal monitor on the market to offer: A flow compensated pump for compliance monitoring. Tested and validated sampling inlets for respirable, inhalable and thoracic sizes, and the ability to use any preloaded filter cassette. THe new HD-7204 offer real-time rolling graphs, wireless and netowrking options