Category: Indoor Air Quality (IAQ) Testing Dallas – Fort Worth – Austin – Houston

Pacemaker EMF Biomedical Implant Dangerous Magnetic Field Sign 0

Pacemaker / Biomedical Implant Electromagnetic Interference EMI Sources & Issues

While pacemakers and other biomedical implants and implantable devices are somewhat more resistant to electromagnetic interference (EMI) than in previous generations, there are also more sources of potential EMI from new technologies such as...

Indoor Air Quality VOCs 0

VOC (Volatile Organic Compounds) Indoor Air Quality Contaminants and Health

VOCs, plastics, pesticides and other solvent vapors which contribute to poor indoor air quality, allergies, illness, airborne toxicity and carcinogenic risk.   NATURAL AND SYNTHETIC CHEMICALS VOCs – can be classified by boiling points...

Origin of Dust Particulate Matter 0

Composition of Dust Particles and Particulate Matter in The Air

When I test for PM2.5 and PM10 which are Fine Particle and Coarse Particle designations used by the EPA, I am often asked what is the nature of this particulate matter. These may also...

MERV MPR FPR Air Filter Ratings Compared 2

MERV (Minimum Efficiency Reporting Value) Ratings and Filters

You generally cannot place a True HEPA filter in your air furnace because of the flow restriction would place too heavy a load on the blower unit. But you can get a higher efficiency...

Water Contamination Analysis 0

Water Filtration Particle Sizes and Composition for Contamination Control

For aqueous media such as drinking water, here are some reference charts which compare ranges of relevant pollutants, and suggest different filtration mediums which are relatively effective in removing these contaminants. *NOTE – there...

TVOC VOC Meter Indoor Air Quality 0

Air Quality TVOC (Total Volatile Organic Compound Theory) and Health Effects

It is a widely held belief in the environmental health sciences community that exposures to individual VOCs and SVOCs (Semi-Volatile Organic Compunds) in indoor environments ARE NOT the sole factor for health issues and...

IAQ Indoor Air Quality Particle Size Penetration Respiratory System 0

Testing Particulate Matter and Indoor Air Quality (IAQ)

Respirable Suspended Particles (RSP) are particles or fibers in the air that are small enough to be inhaled. Particles can exist in a number of states including solids, liquids, a combination of the two....

Mold Microbiology Indoor Air Quality Testing 0

Biological Contaminants & Poor Indoor Air Quality: Allergens, Bacteria, Mites, Viruses

A number of diseases and illnesses can be traced to environmental factors related to poor indoor air quality. Common allergies (which are medically referred to as Chronic Allergic Rhinitis) are caused by exposures to...

Oxygen Indoor Air Quality 2

Indoor Air Quality Testing: Oxygen Levels and Oxygen Deprivation Effects

One metric that is commonly overlooked in air quality studies is the oxygen percentage in the indoor environment with respect to normal atmospheric composition and how sensitive the human body is to this level....