Equipment of the O.C.H.R.E. Lab
Indoor Environmental Quality
Polarized Light Microscope Olympus BHS Polarized Light Microscope includes built-in 2.0 megapixel camera and Motic Images version 2.0 software. Available with phase contrast options.

Purchased with a grant from CICSH www.csc.eng.vt.edu.
Allows for the microscopical identification of asbestos, silica, and other constituents of construction materials and dusts. Will allow for evaluation of changes in worker airways, nasal passages, mucous cytology resulting from exposure to particulate health hazards. Can also be used to characterize constituents of carpet, air and wall sampling in indoor environmental assessment studies.
Quest IAQ Kit AQ-5001Pro IAQ Monitor Kit, 4Sensor, Logging, Temp/Humidity/CO2/CO Monitor includes carbon monoxide, carbon dioxide, temperature, relative humidity and dew point sensors, for use in evaluations of indoor environments.
RAE IAQ Monitor with PID An indoor air direct read instrument to quantify and datalog Volatile Organic Compounds. To use in studies that evaluate the organic pollutants in the indoor environment, arising from building materials or from fungal contamination.
Pinless Moisture Meter Tramex Moisture Encounter Plus Meter, Pinless Non-invasive tool that uses the principle of electrical resistance to instantly provide a direct reading of moisture levels in wood and building materials such as dry wall and flooring, to evaluate moisture incursion into the building envelope and potential for fungal contamination
Bioaerosol staging impactor BioStage Pump Kit-DC, with QuickTake 30 Pump, 100-240V This single-stage bioaerosol impactor operates on the principle of inertial impaction and meets NIOSH Method 0800 specifications and ACGIH recommendations for sampling indoor and outdoor air for viable microorganisms, including bacteria, fungi, and actinomycetes.
Carpet sampling kit SKC Carpet Sampling Pump Kit The kit contains all the materials needed to sample carpeting for fungal spores and particulates. Includes: high volume pump, vinyl tubing, rotameter, heavy-duty case, and 10 each: micro-vacuum carpet cassettes #225-9542, 10 x 10-cm disposable templates, Luer adapters
Thermohygrometer Testo Model 625-1 Thermo- Hygrometer, Remote Kit, Temp/Humidity, Alkaline. SKC Accurately and reliably measures temperature and humidity. It is ideal for use in thermal comfort studies and HVAC system performance testing.
Anemometers TA9515 Kit includes meter and probe calibration certificate $595.00 Measure air velocity for testing HVAC and industrial ventilation system performance and for design of ventilation systems.
Carbon Dioxide Monitor Testo Model 535 Carbon Dioxide Monitor (with attached probe).

Purchased with a grant from CICSH www.csc.eng.vt.edu.
Measures 0-9999 ppm (0-1Vol. % CO2). Carbon dioxide is a key indicator of indoor air quality. Therefore, this piece of equipment can be used in evaluations of the indoor environment.
Metals analyzer Thermo Scientific XLi800 NITON XRF (X-ray fluorescence) alloy analyzer Allows for the non-destructive analysis of metal constituents of building materials, such as lead-containing paint.
IEQ Monitor with Datalogging GreyWolf IAQDirectSense Allows for simultaneous measurement of total volatile organics, relative humidity, carbon monoxide, carbon dioxide, temperature and dew point.
IR-Spectrophotometer Miran SappIRe Capable of measuring air concentrations for hundreds of specific volatile organic compounds.
Industrial Hygiene
Particulate Monitor TSI Sidepak AM510 Personal Aerosol Monitor Direct-read, laser photometer, aerosol mass concentration datalogging particulate monitor for personal sampling of occupational exposure to dusts, mists, and other aerosols. Built-in impactors for 1.0, 2.5, 10-micrometer size-selection. Cyclone attachment for respirable sampling.

Purchased with a grant from CICSH www.csc.eng.vt.edu.
Can be used in field studies of worker exposure to dusts, or in laboratory comparisons of dust engineering control technology effectiveness
Particulate Monitor Kanomax Model 3887 Particle Counter, NiMH, Logging. The 3886 Handheld Laser Particle Counter simultaneously monitors five particle size channels to provide concentration measurement of 0.3, 0.5, 1.0, 3.0, and 5.0-micron particles. Additional probes for relative humidity/temperature and air velocity for simultaneous monitoring of these important indoor air parameters. Can be used in studies of worker exposure to dusts, in indoor environmental quality investigations, or in comparisons of dust engineering control technologies
Occupational Health
Oximeter Masimo Rad57 Model 2200. Noninvasive Measurement of Methemoglobin, Carboxyhemoglobin, Oxyhemoglobin and Pulse.

Purchased with a grant from CICSH www.csc.eng.vt.edu.
To be used in studies of carbon monoxide exposure in construction or confined spaces or in studies of exposure to methemoglobin-producing chemicals
Puritan Bennett Spirometry System Portable spirometer to measure worker pulmonary function, to include Forced Vital Capacity, Forced Expiratory Volume and FEV/FVC Ratio, according to American Thoracic Society standards.

Purchased with a grant from CICSH www.csc.eng.vt.edu.
For use in studies of worker respiratory response to occupational exposure to airborne health hazards. This equipment can measure obstructive changes in airways (asthma, chronic bronchitis, etc) or restrictive changes in lung health (pneumoconiosis, etc)
Confined Space
Confined Space Monitor Drager X-am 1700 (datalogging) diffusion monitor, with LEL/O2/CO/H2S sensors (sensors not interchangeable), and Alkaline batteries. Monitor has audible, visual, and vibratory alarms.

Purchased with a grant from CICSH www.csc.eng.vt.edu.
Measures carbon monoxide, percent oxygen in air, hydrogen sulfide vapors, and the percent of the lower explosive limit. Can be used in studies of worker exposure to air contaminants in confined spaces or areas with limited fresh air supply.
Confined Space Monitor SKC Product Code: 730-P111-104 RAE EntryRAE (datalogging) Deluxe Kit with LEL/O2/CO/H2S sensors, 10.6 eVPID, internal pump, Li-Ion battery, universal charger/cradle, alkaline battery adapter, ProRAE Studio software, computer interface cable, transport case, accessories kit, and calibration kit (CSK III). Measures carbon monoxide, percent oxygen in air, hydrogen sulfide vapors, and the percent of the lower explosive limit. Can be used in studies of worker exposure to air contaminants in confined spaces or areas with limited fresh air supply.
Carbon Monoxide Sensor The Testo 317-3 Carbon Monoxide Monitor STICK quickly detects carbon monoxide in ambient air (0 to +1999 ppm) and warns the user of dangerous CO concentrations with visual and audible alarms. Ideal for use during furnace/boiler service and maintenance, weatherization audits, and home inspections, CO STICK operation is as easy as turning it on and measuring. A self-test mode eliminates the need for test gas. To be used in design of wearable computing sensors for construction worker exposure to carbon monoxide. Sensor technology will be adapted for wearable design.
Other
Light meter Testo Model 545 Light (Lux) Meter/Logger (datalogging) with probe, 9V alkaline battery, and calibration certificate. Measures 0-10,000 footcandles (fc)/0 to 100,000 lux The quality of light in the workplace, schools, and public buildings affects the quantity and quality of performance in workers and students. Luminous intensity must fulfill specific minimum guidelines in order to be considered good quality light. Approximately 80% of sensations are experienced through the eye. For this, the human eye requires light. According to an American study, 25% of human energy is needed for the process of sight. Humans are accustomed to the light intensity available during the day (approximately 500 fc on a dreary day and up to 10,000 fc on a sunny day). Compare this to the light intensity of artificial light (between 1 and 10 fc) and you can see where the problem lies. Fatigue caused by too little light is generally experienced as systemic tiredness rather than just eye fatigue alone. After spending eight hours a day, five days a week in the typical work setting, the fatigue of too little light can cause degradation of performance.
Sound Level Meter Quest 210 Economy Type 2 sound level meter with meter, windscreen, calibration adapter, and cordura pouch. Sound Level Meter provides A-weighted measurements in 0.1 dB increments. Can be used in studies of mechanical system noise in the indoor environment.