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Kanomax model 3887 handheld laser particle counter

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The Kanomax model 3887 handheld laser particle counter is designed to be portable and easy to use. The Kanomax model 3887 handheld laser particle counter measures 3 particle sizes simultaneously (0.3, 0.5, 5.0 µm) in cf or m³. The user can log up to 8,000 data points and easily transmit the data to a PC or printer, using the Windows software and RS232C or RS485 interfaces. Applications include clean rooms, IAQ investigations, food industries, filter testing, aerospace, hospital surgical rooms, and paint spray booths.  

Handheld particle counters span several industries, but can be split into two classifications. Handheld particle counters either work for dirty environments or clean environments. These terms are relative. A clean environment would be a clean room or critical environment, as specified in the Federal Standard 209E or ISO 14644-1. Acceptable maximum levels of contamination in clean room environments range from 10 particles of 0.1 micron size per cubic meter to 35,200,000 particles of 0.5 microns size per meter. A dirty environment is what is being considered the air you are breathing right now, regular, naturally occurring indoor or outdoor air, which can be 50 times dirtier than the dirtiest clean room.  

Airborne particles are commonly either biological contaminants, gaseous contaminants or dust. Did you know that there are 3 types of dust? - Heavy dust, settling dust and suspended atmospheric dust. Heavy dust is the layer of dust on furniture and floors. Settling dust is the particulates in the air floating around before it turns into heavy dust. Suspended atmospheric dust is minute particles slowly settling or suspended by slight currents, and existing in varying amounts in all air. There is least dust at high levels over the ocean and most at low levels over cities.

Biological contaminants include mold, fungus, bacteria, viruses, animal dander, dust mites, pollen, human skin cells, cockroach parts or anything alive or living at one time. These are the big enemy of indoor air quality specialists because they are the contaminants that cause health problems. Levels of biological contamination depend on humidity and temperature that supports the livelihood of micro-organisms. The presents of pets, plants, rodents and insects will raise the level of biological contamination.

Gaseous contaminants are produced by certain chemicals or materials. As far as gases go, volatile organic chemicals (VOCs) are the common source of health problems. VOCs are released from building materials, paint thinners, plastics, cosmetics, dry cleaning solvents, petroleum fuels, termites, and wood preservatives to name a few. High vapour pressure of VOCs, contribute to sick building syndrome. Particle counters can not detect gaseous contaminants, though there are multi gas meters that do. Gaseous contaminants can be adsorbed by activated carbon or charcoal. Certain air cleaners or purifiers have the ability to reduce VOCs from indoor air using carbon or charcoal.

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