Critical Environment Technologies Canada Inc. (CETCI) has doubled its manufacturing and office space to approximately 11,000 square feet as of December 1, 2010.

The service department and production department for portable IAQ instruments have moved into the new additional space. Meanwhile, production department for fixed gas detectors has utilized the space vacated by the

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They Are All Around You: Ammonia & Chlorine. Be Aware of Them and Stay Safe.


The two most common chemicals found in your home, office and commercial facilities in one form or another are Ammonia (NH3) and Chlorine (Cl2). They are also two of the oldest and most widely produced chemicals in commercial use around the world.
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The easiest way to check if your house is encapsulating gases is to monitor the carbon dioxide (CO2) levels. This one gas is used as a marker for air quality, is the easiest to monitor, and provides a more accurate air quality reading.

It is a good trend indicator because it changes in measurable amounts as the air quality gets worse. All other gasses in the house follow...

Every where we turn people are conserving and reducing in order to save money and our homes are no exception.

Every day there is new methods and products that are introduced to the market for you to save on your energy bill. In the short term, these newly introduced products stop your house from losing heat. What you may not know is that, in the long term, these same products are...

Purdue university researchers demonstrate to us one great method to lower 50% of winter home heating bills

Researchers at Purdue University are working on a new research project that promises the potential to reduce heating bill in half for those who reside in very cold climates. The study, funded by the U.S. Department of Energy, builds on previous work that began

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Critical Environment Technologies Canada Inc. (CETCI) is a known industry leader and innovator for the indoor air quality (IAQ) market. Their two best selling portable IAQ instruments are the YESAIR and YES Plus LGA.

Both IAQ instruments are portable, multi-channel monitors featuring thirty different internal plug and play sensors to select from and a remote particulate sensor that...

How can you improve the IAQ around you?
Now that you have an understanding about the air that you’re breathing, you can take can control and improve your IAQ.
Here are some preventatives that you can do to minimize your health risk:

Sick Building Syndrome (SBS) and
Building Related Illness (BRI)


Long term exposure to VOC contributes to SBS and BRI. Based on the US Environmental Protection Agency (1991), SBS and BRI are compared in Table 3 below: