The first time I actually paid attention to this Latin phrase was when I saw the 1989 movie Dead Poets Society, staring Robin Williams. The term Carpe Diem means “Seize The Day.”  The movie was about boys coming of age in a prep school and their teacher was providing new ideas and ways to think differently about themselves and the world around them. Some of us look at the world through rose colored glasses while many of us look at the world in wonder.

It is in my nature to question everything. While it is easier to sit back and accept what we hear and read, questioning takes energy but also tasks the informer to explain their position. We seldom question information from sources we believe to be credible or from associates who seem to know more about certain issues than we do. We certainly don’ t want to be cynical all the time and yet we get trapped into accepting something based solely on a small amount of information.

Information on product performance is especially susceptible to this problem. Well-known companies with well establish product lines can come out with a new product or service and we immediately accept their “hyped” performance claims simply because of our product loyalty. We will purchase their product and deem it unacceptable only after we have determined over continued use that it just doesn’t meet the performance claims.

Pure Air Systems has been manufacturing commercial grade HEPA air filtration systems since 1985. The acceptance of true HEPA filters for best choice of removing respirable sized airborne contaminants has slowly progressed over the years. For years ASHRAE standards for pleated media filters ranging in efficiencies of 30% to 95% in particle reduction efficiencies were touted as best choice for airborne particle reduction. However, unlike the HEPA filters which actually have an efficiency rating based upon particle size, the ASHRAE standards were based on particle weight not on particle size reduction efficiency.

Over the years a new “MERV” rating system for filter efficiency came into use to even the playing field. These new MERV ratings established a particle size removal rating for each MERV grade of filter based upon the effectiveness of removing a percentage of particles at 0.3 microns in size. Which, by the way, is the particle size standard for HEPA fitlers. They have to have a minimum efficiency of 99.97% reduction of all particles 0.3 microns in size or lager to be considered a true HEPA filter.

Once the new MERV standards were adopted by the filter manufacturers it opened the eyes of the people and companies that use air filters. Like Robin Williams who stood on the desk in his classroom because he wanted to look at the world from a different point of view, the MERV ratings offered buyers a more objective way to evaluate air filters.

You can view the entire line of HEPA and Carbon based air filtration systems manufactured by Pure Air Systems on our website at: Or contact us by phone at: 800-869-8025.


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About the Author: Don Musilli

My name is Don Musilli. I started Pure Air Systems in 1985 and then sold it in 2006. I continue to consult for PAS and write their blog and control their Twitter account. I also, on occasion, make changes to the website. The company is now almost 26 years old and has been a major player in offering commercial grade, high performance HEPA and Carbon based filtration systems for the commercial, institutional, industrial and residential markets.

I currently reside in Englewood, Florida where I write blogs and do social media marketing for a number of clients.

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