Specifications include, but are not limited to: EA THERMO ENVIRONMENTAL INSTRUMENTS INC. 2025i PARTISOL AIR SAMPLER. The sampler must be a new Thermo 2025i Sequential Sampler set up for collecting Particulate Matter at 2.5 um or less (PM2.5). - The sampler must be an EPA recognized Federal Reference Method for collecting PM2.5 - Partisol Air Sampler Includes: Partisol-Plus Sequential Sampler, Stand, Pneumatically-Activated Filter Exchanger In Ventilated Filter Compartment, Active Volumetric Flow Control System, Brushless Pump, Microprocessor With Menu-Driven Software, Display And Keypad, Sensors For Ambient Temperature, Pressure, Relative Humidity And Filter Temperature, 2 Operating Manuals, 1 Quick-Start Guide, 1 Service Manual, AKComm RS232 Software. - Instrument Warranty: 1 Year Warranty