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Downflow Containment Booth

Downflow Containment Booths that make the difference in pure raw material sampling and worker safety.

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    International Portland
    International Portland

    International Portland specializes in down-flow booths and mobile mini-environments.

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    Fast Shipping
    After you buy, you shouldn’t have to wait weeks for your gear to arrive. We ship fast so you can keep your cleanroom project on schedule.

    We service everything we sell. That means you get faster troubleshooting support and better response times than you would with other manufacturers or manufacturer’s reps.

    Special pricing is available for your business. Contact us and set up an account to make sure you get the best price available on every purchase.

    We guarantee you’ll get the right instrument for your cleanroom. If it isn’t exactly right, we’ll swap it out and find the right choice. If for some reason we don’t carry what you need, we’ll point you to a source that does (we’ll never sell you an alternative that doesn’t do exactly what you need it to do).


    With 20 years of experience, International Portland has set the standard for mobile localized clean air (mini-environments) and downflow containment booths by exceeding customer needs and industry standards - developing Class 100 environments. International Portland's products greatly decrease the risk of product contamination and increase workers' safety.

    • All downflow containment booths feature Class 100 (ISO 14644-1 Class 5) HEPA filtered air at 90-100 fpm over the entire ceiling, resulting in no updrafts that would contaminate pure raw materials and endanger workers' safety.

    • Pre-filter intakes at low levels provide Class 100 air over small drums as well as large containers.

    • Negative pressure in the booth prevents material from escaping to the outside.

    • Smooth cavity-free containment walls allow for easy wipe-down.

    • All models are covered by a three-year warranty.

    • All products are designed for long-term use and are of the highest quality construction.


    The Model 895 is ideal for warehouse sampling a full pallet of four drums of raw material (powder or liquids). Class 100 air flows down over the drums and then into the pre-filter intakes at the bottom of the back wall of the containment area. Approximately 90% of the air is recirculated and 10% is exhausted through a 99.99%-efficient exhaust HEPA filter. The exhaust air ensures that negative pressure is maintained inside of the containment area.


    • Class 100 (ISO 14644-1 Class 5) Air

    • <20ug/m3 Operator Exposure Level


    • 100% Exhaust

    • Stainless Steel Left & Right Walls

    • Explosion Proof (Class I, Group D - Class II, Groups F & G)

    • ESD Curtains

    • Bag-In-Bag-Out Filters

    • Swivel and Locking Casters

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