air duct contamination Articles

  • Winning strategies for commercial air duct cleaning

    Commercial air duct cleaning is different than residential air duct cleaning. The work hours are different; the HVAC systems are larger and more complex.  You’ll need more types of cleaning tools, more financial resources, more knowledge and more connections!  The challenges are many but the rewards are great - if you’re successful!  What do you need to do to be ...


    By Vac Systems

  • Ducted or Ductless Fume Hoods? Is this the real issue?

    Most laboratories will need some form of fume cabinet at some point. The type of cabinet is usually the starting point of the process, and the choice of either ductless or ducted cabinet is made. With the ever increasing need to save money and to be environmentally responsible there are other considerations that need to be explored before a decision can be reached. ...


    By Camlab Limited

  • Why use purge air? And what practicalities to consider.

    Many AMETEK Land instruments use purge air, in the post I am going to explain the purpose and some of the practicalities surrounding this technology. In general, purge air is used on optical instruments such as emissions monitors and ...


    By AMETEK Land

  • 4 Signs Of Poor Indoor Air Quality To Watch For

    The quality of indoor air is something most of us take for granted. Unless there is something very specific and unusual going on around us, like heavy cleaning or maybe new construction, we don’t often think about whether or not there is anything wrong with the air we breathe as we go about our daily business. The truth is, though, that indoor air quality is often worse than ...


    By Camfil Ltd

  • TopAir`s Fume Hood

    TopAir, Statitech Israel’s flagship brand, manufactures a full line of superior cleanroom equipment including a reliable fume hood for neutralizing potential airborne chemical hazards in the laboratory. The fume hood mechanism offers maximum protection to laboratory staff working at a cleanroom table under the fume hood.   There are two basic types of fume hood. Many industries use a ...


    By TopAir Systems

  • Bolderwood Campus Southampton – Case Study

    Project Highlights Envirochem were responsible for organising all consultant and analytical works relating to the removal of all asbestos containing materials from a busy biomedical sciences facility. Our work and advice ensured that both the university and demolition contractor were able to proceed with their building project within a ...

  • A new exhaust ventilation system design software

    By industries development, the amount of air contaminants that are released in workplace has grown increasingly. To reduce these contaminants, there are several methods that, one of which is control at source. Industrial ventilation is perhaps the most powerful tool available for environmental professionals to control workplace pollution. Exhaust ventilation can capture contaminants at source, ...


    By University of Tehran

  • Safe House?

    A client who had lived in her house for more than ten years was concerned that her son who suffers from certain inflammation problems might be affected by poor air quality. Investigation: The home is a well maintained twenty year old two story house with a forced hot air heating system with same duct central air. The HVAC system incorporated a merv 6 air filter with an ultra violet ...


    By Healthy Air Cape Cod

  • Mishandling of Hazardous Materials & Contaminants, Asbestos, Lead, Mould & Fungus, PCB`S

    Untitled Document Everyday in Canada and the United States Hazardous Materials are being removed improperly contaminating the buildings we occupy. The hazardous materials including ...

  • Minimising Risks to Air Quality and Regulatory Compliance With Total Filter Management

    It has been shown in recent studies that as much as 25% of the total site operating budget (excluding raw material costs) for a typical medium-large dosage-form manufacturing facility will be spent on compliance measures for internal quality systems and external regulatory activities. (1) Market realities indicate that the pharmaceutical companies will need to address the overall cost of ...


    By GVS Filter Technology

  • Process Combustion Thermal Oxidisers - Tobacco Drying & Incineration Recuperative Thermal Oxidiser

    Process Combustion have supplied several thermal oxidiser and process heater units for the tobacco processing industry. The thermal oxidiser provides heat into the tobacco drying loop using a recycle heat exchanger. An exhaust stream from the drying loop is supplied to the thermal oxidiser, where it reaches a temperature of 800°C to oxidise contaminents. Waste heat is also r ecovered to ...


    By Process Combustion Ltd

  • UV Light Treatment for HVAC Systems

    Ultraviolet (UV) light can be applied to support numerous applications in a broad range of industries. In commercial paint spray booths and label manufacturing plants, UV lamps are used to streamline paint jobs and the printing of logos. Outside of such practices, the light source may also be utilized to eradicate harmful, disease-causing bacteria. Systems that rely on the light’s ability ...


    By Larson Electronics LLC

  • Drying plastic resin pellets in injection- Molding & Extrusion processes case study

    Application Moisture concentrations are measured in the dry purge air used to remove moisture from a hopper containing plastic resin pellets used in injection-molding and extrusion processes. Problem Moisture contaminates the plastic resin pellets causing several quality problems in the finished plastic products. Moisture causes clear ...


    By AMETEK Process Instruments

  • Why Use Purge Air? And What Practicalities to Consider.

    Many AMETEK Land instruments use purge air, in the post I am going to explain the purpose and some of the practicalities surrounding this technology. In general, purge air is used on optical instruments such as emissions monitors and ...


    By AMETEK Land

  • Killing all bacteria (the good and the bad) Now what?

    In today’s world it is not uncommon for people to grasp for antibiotics at the first sign of illness. However, when we take antibiotics we are not only killing the bad bacteria but we are also killing the good bacteria. In most cases, you don’t want to avoid taking antibiotics as they can be life-saving medications that help to eliminate bacterial infections. However, eliminating good ...


    By BetterAir

  • Hepa this Hepa that, is there such thing as a true Hepa vacuum?

    We all see it, the big Hepa sticker on the side so we automatically believe the vacuum must be a Hepa rated vacuum, right? - Sorry the chances are the Vacuum would never pass a Certified D.O.P test. Just because a vacuum has a Hepa filter doesn't make it a Hepa vacuum, many factors have to be taken into account such as: The Hepa Filter needs to be sized according to the airflow ...


    By Hypervac Technologies

  • Incineration

    Introduction: High temperatures, 870 to 1,200 °C (1,400 to 2,200 °F), are used to volatilize and combust (in the presence of oxygen) halogenated and other refractory organics in hazardous wastes. Often auxiliary fuels are employed to initiate and sustain combustion. The destruction and removal efficiency (DRE) for properly operated incinerators exceeds the 99.99% requirement for hazardous waste ...

  • Controlling Bacteria In a Clean Room Environment

    Maintaining the integrity of a cleanroom is a constant battle. The first step to deciding which method, or combination of methods, to employ is to identify the prime sources of contamination. There are three prime sources of contamination through which the integrity of a cleanroom might be breached. First, there is the human element. While many processes might be automated, many situations remain ...


    By GVS Filter Technology

  • Improving energy efficiency: About oil fouling in refrigeration systems

    Introduction Most air conditioning and refrigeration systems have a mechanical compressor which relies upon lubricating oil to function. During the normal course of the refrigeration process, ½% to 8% of the compressor’s lubricating oil is circulated throughout the system along with the refrigerant. Since the early days of refrigeration and air conditioning technology, the ...


    By Power Knot LLC

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