The Professionals Choice for Air Sampling Equipment

Zefon International is a manufacturer and supplier of sampling equipment used to monitor indoor environmental, occupational health, and safety conditions. From our 50,000 square foot facility in Ocala, FL, we manufacture a large selection of air sampling filter products and sampling pumps. From the first step of injection molding of the plastic parts to the final assembly and packaging, we do it all.

We are a longstanding partner with air quality experts around the world. We have an established presence and positive reputation among the environmental community worldwide since 1990. With an extensive catalog of high-quality equipment and a commitment to standing behind everything we sell with exceptional customer service, we are your one-stop shop for everything you need to monitor environmental and occupational health and safety conditions.

Shop online for fast delivery anywhere in the United States. For international sales, visit our Dealer Locator page to find a representative in your area.

Our Air Quality Sampling Equipment

As an air quality professional, you know the importance of accurate and reliable equipment. Your ability to sample and monitor various parameters with confidence is critical to regulatory compliance and safety alike. That's why Zefon International manufactures and sells a wide selection of equipment and tools. In our catalog, you'll find:

  • Sampling media and cassettes: Our sampling media includes preloaded cassettes, filter membranes, surface sampling equipment and more. The proprietary Air-O-Cell® bioaerosol cassette — one of our bestselling products — is industry-proven and independently tested for rapid collection of viable and non-viable aero-allergens such as mold, spores, pollen, insect parts and more.
  • Sampling pumps and calibrators: We manufacture and distribute reputable brands of area pumps, personal pumps and IAQ pumps, as well as sophisticated calibration equipment to keep those pumps running at their correct flow rates at all times. All products are easy to use and affordably priced, making them an excellent overall value.
  • Portable instruments: Specialized air sampling machines and air monitoring equipment available from Zefon International includes personal noise dosimeters, dust monitors, optical particle counters and more. The instrument manufacturers we represent deliver true portable power, a wide range of interface and data management configurations, and extensive programming options.
  • Gas detection equipment: Our gas detection equipment lineup includes passive air monitoring badges, Gastec® and Sensidyne® gas detection tubes with built-in calibration scales, pumps, CBA analysis kits and more.
  • Laboratory and safety supplies: Leverage our expertise in air quality sampling and monitoring. We offer a variety of safety supplies such as acetone vaporizers, microscope slides and covers, sample collection and storage bags, and respirator fit test kits.

Why Zefon International?

You have a choice when it comes to buying air sampling equipment. Choose Zefon products and benefit from our:

high quality productsHigh-Quality Products

When purchasing from Zefon you can rest assured that you will be receiving only high-quality products; products you can count on to work time and time again. Count on us for defect-free air sampling products that work reliably every time you need them.

great customer serviceGreat Customer Service

We pride ourselves on providing friendly and knowledgeable customer service. You can rely on reaching someone who is happy to help you with the questions you may have. Our team of experts is available to provide informed advice and no-pressure sales assistance by phone or email.

competitive pricing Competitive Pricing

By manufacturing many items in-house and partnering with many great manufactures of other brands, we are able to offer our products at an affordable price that delivers excellent overall value.

large product selectionExtensive Selection

We have one of the largest assortments of air sampling products online, with options for all professionals.

fast product deliveryFast Delivery

Our large network of distributors are strategically located to provide you with fast delivery of the Zefon products you need from a local or regional warehouse. Order online and get your purchase shipped out to you in days, not weeks.

iso certifiedISO 9001:2015 Certified

Zefon has been certified to be in compliance with the ISO 9001:2015 standard for design and manufacture of air sampling products, air sampling cassettes and media and air sampling equipment for potentially explosive atmospheres. Distribution of sampling media and cassettes, sampling pumps and calibrators, portable instruments and gas detection equipment. View Zefon's ISO 9001:2015 Certificate


Explore our website and find out why we're the choice of industrial hygienists, researchers, damage restoration contractors, construction and mining safety workers, and other professionals. Shop Zefon International online, call one of our highly trained sales reps, or visit your local distributor for assistance. You can also download our catalog to learn more about our superior air sampling products. 

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