Cleanrooms

  1. ISO 14644 Types of Cleanrooms & Components | Comparison & Features Guide

    ISO 14644 Types of Cleanrooms & Components | Comparison & Features Guide

    Laminar flow air and positive pressure cleanroom design are ideal for non-hazardous, ultra-clean applications. Positive pressure mitigates dirt from entering the cleanroom when opening doors or pass-through chambers. Laminar airflow design ensures that air maintains a singular, uniform direction and velocity from intake to exhaust port. Terra's positive pressure cleanrooms include HEPA filtration systems capable of ISO Class 3 - ISO Class 8 air quality conditions. ULPA filtration units are available for the most sensitive ISO 3 - ISO 5 product applications including pharmaceutical compounding, semiconductor wafer processing, sterile packaging, and micro-nanofabrication.

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  2. Cleanroom Best Practices: 18 Rules For Cleaner Controlled Environments

    Cleanroom Best Practices: 18 Rules For Cleaner Controlled Environments

    Check out our list of Dos and Don’ts in a cleanroom, a summary of cleanroom best practices for making the controlled environment function at peak performance. These are good resources for new cleanroom operators or those unsure about what steps to take in a cleanroom environment.

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  3. FFU Costs for an Energy Efficient Cleanroom

    FFU Costs for an Energy Efficient Cleanroom

    A HEPA fan filter unit (FFU) is a crucial component of every cleanroom environment. Making the correct decision as to which type of FFU is the most appropriate for your application is not something to simply gloss over. There are two main categories of motorized fan filter units: permanent split capacitors (PSC) and electronically commutated motors (ECM). Both types of fan filter modules provide a perfunctory standard for any cleanroom, but differ by way of efficiency, durability and cost. PSC systems save you money upfront and are ideal for small, consistent projects. However, when considering longer endeavors, especially those with ever-changing circumstances, the ECM will pay for itself with energy savings. For instance, in California at an average of 14.47 cents per kilowatt hour, you would make the difference between the higher upfront costs of the ECM over the PSC bac

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  4. How Fan Filter Units Fight COVID-19

    How Fan Filter Units Fight COVID-19

    In addition to face masks, properly maintained air filters remain crucial in confined indoor spaces to help mitigate the spread of COVID-19 (SARS-CoV-2 virus). Both HEPA filters and ULPA filters reduce the number of microscopic particles in the air, which can keep air safe to breathe in places it’s needed most like hospitals, isolation rooms and crowded indoor areas.

    COVID-19 virus spreads through the air on respiratory droplets created from talking, coughing, sneezing, and even breathing. When these activities occur in a populated space with stale air, the likelihood of transmission can significantly increase, as COVID-19 has been proven to remain viable for at least 3 hours lingering in the air or on surfaces up to four meters away from its last host.

    Masks and social distancing significantly reduce the chance of the virus’s spread

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  5. 304 and 316 Stainless Steel Equipment for Laboratory and Cleanroom Operations

    The last thing you need is your lab equipment rusting out on you. When considering your specific application needs for new stainless steel equipment, a recurring question in the market remains—what’s the difference between 304 and 316? When should you consider 316? In scenarios demanding the utmost vigilance, you may discover you require 316L stainless steel.

    304 Stainless steel is composed of 18% chromium and 8% nickel. 316 Stainless steel is made up of chromium and nickel at 16% and 10% respectively, but also includes molybdenum—a silvery-white metal that’s highly resistant to corrosion.

    316L Stainless steel contains the same corrosion-resistant materials as 316, but includes the added benefit of a lower carbon content—eliminating the opportunity for excessive metallic contamination and making cracking less likely. Both 316 and 316L are able to withstand chlorides and chlorinated solutions, such as Spor-Klenz® and Isopropyl Acetate

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  6. Air Shower Protection for Cannabis Grow Rooms

    Air showers are chambers or tunnels used to decontaminate personnel via air jets as they enter or exit a cleanroom. By using pressurized jet nozzle air streams, air showers blow contaminating particles away from people or items that enter, then filter pollutants and redirect the clean air out of the chamber. The showers are placed at the entrances of cleanrooms or other controlled environments to secure the biggest potential containment breach, minimizing the danger to workers or products.

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  7. Cleanroom Design that Terra Recommends

    Terra Universal will certify its cleanrooms to guarantee “as built” compliance with cleanliness standards. What matters, though, is how the cleanroom performs in real world applications—in your application, with your personnel and processing equipment.

    Careful consideration of these operating conditions will help you select the configuration that meets your requirements and fits your budget!

    Cost vs. Coverage: Evaluating FFU Placement

    The cleanest modular cleanroom incorporates filter/fan units (FFUs) in every 2' x 4' (610 mm x 1219 mm) ceiling bay. This near-100% ceiling coverage provides a laminar flow of filtered air to quickly remove contaminants from the cleanroom, meeting ISO 3 or ISO 4 (Federal Standard 209(E) Class 1 or Class 10) environments (depending on the filter types selected, HEPA or ULPA).

    Of course, 100% ceiling coverage requires substantial investme

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  8. Static Dissipative PVC vs Acrylic

    Static Dissipative PVC vs Acrylic

    Hidden Costs of Acrylic Enclosures

    Static control arrow

    Compared to acrylic, static-dissipative PVC offers three benefits that reduce operating expenses and drive down overall ownership cost of a clean room, glove box, hood, desiccator, or other enclosure.

    Contamination Control

    Acrylic is a prolific static generator. The back-and-forth motion of wiping an acrylic surface creates positive and negative surface charges that attract and hold small particles.

    The resulting static cling makes it difficult to remove contaminants from the charged surfaces without the use of ionizing equipment or frequent cleaning with special anti-static solutions. Variations in the surface charges can lead to unpred

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  9. Biological Safety Levels: BSL-1, BSL-2, BSL-3, BSL-4

    What is BSL?

    Biological Safety Level (BSL) is a biocontainment designation system with requirements intended to protect personnel from potentially harmful pathogenic exposure in a research or manufacturing environment.

    What are the differences among the BSL designations?

    The Centers for Disease Control (CDC) specifies four broad Biological Safety Levels, each of which corresponds to a level of exposure danger and a set of design features and operational protocol. Each increasing level builds on the previous level(s):

    • BSL-1: Required in the presence of microbes that do not consistently cause disease, such as E. coli. Work can be done on an open bench, and minimal Personnel Protective Equipment (PPE) is required. Doors separate the BSL-1 lab from the rest of the facility.
    • BSL-
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  10. FS209E and ISO Cleanroom Standards

    Terra Universal is the leading expert in the design and fabrication of critical-environment applications. We offer a complete range of equipment, furnishing and supplies for cleanrooms and laboratories. The following are the rigorous standards to which Terra Universal adheres.

    Before global cleanroom classifications and standards were adopted by the International Standards Organization (ISO), the U.S. General Service Administration’s standards (known as FS209E) were applied virtually worldwide. However, as the need for international standards grew, the ISO established a technical committee and several working groups to delineate its own set of standards.

    FS209E contains six classes, while the ISO 14644-1 classification system adds two cleaner standards and one dirtier standard (see chart below). The "cleanest" cleanroom in FS209E is referred to as Class 1; the "dirtiest" cleanroom is a

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