Item #1: P-trak Ultrafine Particle Counter 8525 Description: The ultrafine particle counter 8525 is an ideal instrument for detecting and counting ultrafine particles (smaller than one micrometer) that often accompany or signal the presence of a pollutant that is the root cause of complaints or exposure. This instrument is used to detect the migration of toxic exhaust aerosols, pinhole gasket leaks in boilers, filter checks, check fume hoods, etc. Physical Attributes:10.75”x5.5”x5.5”. Weight: 3.8 lbs. 6 AA alkaline batteries. Functional Requirements: Instrument needs 100% reagent grade isopropyl. Concentration range: 0 to 5x105 Particles/cm3 Flow rate: 100 cm3/min Accessories to be Included: Carrying case, telescoping sample probe, inlet screen, spare wicks, alkaline batteries, alcohol fill capsule with storage cap, reagent grade isopropyl alcohol, zero filters, trakpro software, computer cable, operations and service manual. Warranty: Two-year warranty. Item #2: DustTrak DRX 8533 Description: DustTrak DRX monitors are battery operated, datalogging, light-scattering laser photometers that give real-time aerosol mass readings. It can simultaneously measure size-segregated mass fraction concentrations corresponding to PM1, PM2.5, Respirable, PM10 and Total PM. Applications include engineering control evaluations, epidemiology studies, IAQ investigations (wildfire smoke), Industrial/occupational hygiene surveys, outdoor monitoring, remote monitoring. Physical Attributes: 5.3”x8.5”x8.8”. Weight: 5.5 lbs. USB and Ethernet communication. Functional Requirements: Particle size range: 0.1 to 15 µm. Aerosol concentration range: 0.001 to 150 mg/m3 . 60K data points, resolution +/-0.1%. Accessories to be Included: zeroing filter, sampling probe, case, software, USB connector. Warranty: Two-year warranty. Item #3: Calibration Kit, CO2, 5000 ppm Description: This is a calibration gas lecture bottle. It will be used as primary calibration gas for the Indoor air quality meter 7545. Physical Attributes: Metal lecture gas bottle. 58- or 103- Liters bottle. Functional Requirements: carbon dioxide concentration at 5000 ppm. Accessories to be included: storage case. Warranty: Two-year warranty.