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Indoor Air Quality – Lighthouse Products by Particle and Surface Sciences

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Monitoring Airborne Particles During Mould Remediation

Successful mould location, containment and remediation requires a variety of industry specific tools, and particle counters are commonly used to assist in these tasks. As mould is actively reproducing, the airborne spores generated are generally between 1.0 and 10.0 microns in diameter, and are invisible to the human eye. Particulate monitoring is an ideal way to pinpoint the escalation of airborne particles at a specific location. During mould remediation, containment is vital to ensure that the mould spores generated by the remediation process remain within the confined area of work. Comparative sampling is needed both inside and outside the containment area, and may be accomplished rapidly and accurately with a Particle Counter.

Monitoring Airborne Particles During HVAC Duct Cleaning

Heating, air conditioning and ventilation units as well as their ducts can be sources of mould, fungi, other microbial pollutants, dust particles, secondary smoke and organic material. Testing and cleaning HVAC systems in general, and the duct work in particular, is achieved through various methods (contact method, air sweep method, or mechanical brush method). Typically, the “loosened” particulate matter is drawn through the ductwork by vacuum collection equipment. Monitoring particulate counts throughout the HVAC system (supply side and return side), both prior to and after cleaning, assists in achieving the cleanliness level specified by the NADCA ACR 2002 standard.

Monitoring Airborne Particles for Filter Testing Efficiency

Filters are used to remove particles from the air stream. Testing these filters on a regularly scheduled basis is critical to the continued successful operation of the HVAC system. Clogged or dirty filters are detrimental to the overall quality of air being circulated throughout a building, and will generate excessive amounts of particulate matter. Filter testing consists of visually inspecting the filter system, and associated ductwork and mechanical components, for any obvious signs of damage. Airborne particulate sampling is recommended both upstream and immediately downstream of the filter. Depending upon the filter rating, appropriate levels of particulate matter downstream of the filter are compared to upstream readings.

Particle and Surface Sciences  provide lighthous products.

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