Profile: Hi-Q Environmental Products Company, Inc is a manufacturer of of high quality air sampling equipment, systems and accessories. We are an ISO 9001:2000 certified company. Our product line includes air flow calibrators & adapters, air sampling accessories, continuous duty air samplers, filter holders and replacement & spare parts list. Our brands include PSU™, Solar Air Sampler™, Mobile Cart Air Sampler™ and Gooseneck™. Our air flow calibrators are generally used to verify the displayed air sample flow rate accuracy of complete air sampling systems. Along with the air flow measuring device to be calibrated, it is recommended that a " Complete" system for calibration should also include the actual filter holder and filter media in order to duplicate realistic pressure drops experienced in a true sampling environment. Our outdoor high volume air samplers are housed in clear-anodized aluminum outdoor shelters. These TSP-series samplers incorporate a maintenance-free, two or three stage centrifugal blower powered by either brushed or brushless variable speed, maintenance-free motors. The volumetric flow rate is controlled either manually or automatically by an electronic mass flow sensor that detects changes in the operators pre-set flow rate caused by changes in temperature, barometric pressure, and pressure drop due to dust loading on filter media. We offer a complete repair and retrofitting services.