air particle counter Articles

  • Cleanroom Process Risk Assessment per Annex 1

    In the final part of our five part series of Quality Risk Management per Annex 1, we explore the benefits of a Cleanroom Process Risk Assessment and how our Contamination Control Advisers can provide you with one. Process Risk Assessment: Why it’s important A process risk assessment helps you to to ensure risks are properly controlled. Without a risk analysis: ...

  • Manifold Particle Monitoring: Traditional Limitations

    In traditional manifold systems, a powerful pump pulls air simultaneously from as many as 32 different monitoring locations, with each location as far away as 125 feet. This large cumulative length of tubing, plus the volume of air being moved, requires the pump to create a strong vacuum. As a result, the particle counter samples air from the manifold at a vacuum. The counter no longer draws air ...


    By Particle Measuring Systems

  • Microfiltration Pilot System, California

    INTRODUCTION In May 2013, Pure Aqua, Inc. successfully manufactured and supplied an microfiltration pilot system to a membrane manufacturer for Title 22 certification. Title 22 is the State of California’s stringent standard for treatment/disinfection of wastewater for non-potable reuse and ...


    By Pure Aqua, Inc.

  • Do Air Filters Help With COVID - Here`s the Truth

    Our world is currently dealing with a huge problem with COVID-19. Not knowing if who we may be walking near is sick. Being constantly on edge about what germs we are being exposed to. Having to have that tough talk with our children about what is going on with our health and how they need to adjust their lives in order to manage what’s this pandemic. Despite all of this, the one ...


    By Bestfilters.com LLC

  • How to Select a Portable Airborne-Particle Counter for ISO Certification of Cleanrooms

    Basics Certain factors are routinely considered for any particle counter purchase, such as price, warranty, quality, and expected laser lifetime. When selecting a particle counter for cleanroom certification it is important to consider additional factors. Of these, sensitivity and flowrate are the most important parameters, both of which determine the sampling time required to complete ...


    By Particle Measuring Systems

  • Selecting an Airborne Particle Counter: Terminology and Standards (Series Part 1 of 4)

    Your needs for an airborne particle counter can depend on monitoring environment, communications, desired flowrate, and the particle sizes of interest. Don’t know where to start? Read on for an overview of the basics for choosing the method to monitor your process air. Common Specs: Flowrate and Sample Volume All airborne particle counters sample air at a specified ...


    By Particle Measuring Systems

  • Particles Matter

    We all can recall our mothers telling us as children to go outside and get some fresh air.  Who would have known just how important this statement was and is today?  Air pollution affects the entire planet. You can't escape it anywhere not even inside your home or office. According to the United States Environmental Protection Agency (EPA), indoor air can be up to ten times more ...

  • NanoVision Technology Liquid Optical Particle Counters Enter the Digital Age

    Abstract There are many industries that use Optical Particle Counters (OPC) to monitor particle contamination in liquids. While liquid OPCs have evolved with time they have employed the same general light-scattering design principles. Now, NanoVision Technology brings particle counters to the digital age, utilizing ...


    By Particle Measuring Systems

  • Particle Monitoring in Sterilizing Tunnels

    Portable aerosol particle counters are designed to sample ambient air at 1 cubic foot per minute (1 cfm) and no greater than 35 oC. There are however applications which are based on ambient temperatures much greater than this, such as pharmaceutical sterilizing tunnels. Sterilizing tunnels are used to ensure sterility off glassware (vials, syringes, bottles) prior to their entry onto an aseptic ...


    By Particle Measuring Systems

  • Selecting an Airborne Particle Counter: Particles in Process Gases (Series Part 4 of 4)

    This blog is about choosing a particle counter for gas applications. First, determine whether your process gas is reactive or non-reactive. Then decide its pressure range. Reactive Gases Examples of reactive gases include hydrogen and oxygen. These gases require a special particle counter stored inside a containment vessel. In addition, they require careful evaluation that the ...


    By Particle Measuring Systems

  • Selecting an Airborne Particle Counter: Number of Monitoring Locations (Series Part 3 of 4)

    After choosing the monitoring method, determine how many monitoring locations or particle counters you need. If the area of your cleanroom is 1,000 m2 or less, use Table A.1 provided in ISO 14644-1:2015. If your area is greater than 1,000 m2, first divide the cleanroom area (in m2) by 1,000. Then multiply this number by 27. Remember that this is the minimum ...


    By Particle Measuring Systems

  • Selecting an Airborne Particle Counter: Types of Monitoring (Series Part 2 of 4)

    Frequent or Continuous? Frequent Monitoring To demonstrate compliance to ISO, frequent monitoring requires sampling at specified time intervals not exceeding 60 minutes during operation. Manifold systems are the least expensive solution and usually installed during the cleanroom construction process. Standalone particle counters may be installed at any time. A ...


    By Particle Measuring Systems

  • Manifold Particle Monitoring: Improved Accuracy

    The Lasair III Aerosol Particle Counter is the latest generation of aerosol particle counter from Particle Measuring Systems. The Aerosol Manifold II is designed to work with the Lasair III counter under the control of Particle Measuring Systems facility monitoring software ( ...


    By Particle Measuring Systems

  • OLED N2 Box Monitoring Solutions: Monitoring Solutions

    Welcome back to N2 Box Monitoring Solutions. In this blog, practical approaches to monitoring of N2 boxes and their adjoining systems are discussed. Approach is Dependent on Available Space The best way to avoid secondary contamination from a break in the isolated production box for a particle sample line ...


    By Particle Measuring Systems

  • Long Lasting Lasers: Factors that Influence Laser Life

    The three major factors that determine laser life are the design and manufacture of the laser itself, the operating temperature of the laser, and the operating power that is used versus the rated power of the device. Design and Manufacture The first step in providing a particle counter with long laser life is to start with a reliable laser. The lasers used are not designed ...


    By Particle Measuring Systems

  • Series: Comparing Particle Loss in Transport Tubing for Instruments with Different Flow Rates

    Results of Testing Table 3 shows the particle counts from each instrument for each of the duplicated test runs. This data is normalized to counts per cubic meter (n/m3). The results presented also show the % losses of each test run for the instruments relative to the reference  ...


    By Particle Measuring Systems

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