Author Archives: Terra Universal

About Terra Universal

Terra Universal is the leading manufacturing expert in critical environment applications, with nearly 40 years of design and fabrication experience in cleanroom- and laboratory-based industries. Terra manufactures comprehensive lines of modular cleanrooms, pass-through chambers, glove boxes, laminar flow benches and furnishings. Custom work is no problem; our engineers work with yours to meet unique requirements.

Under the Microscope: What are Hoods?

Whether you’re using a laboratory hood to limit exposure to chemical fumes or you require a particle-free work environment, all components of your hood work in tandem to attain optimal functionality. Hoods are enclosures, sometimes called work benches, work stations, or cabinets, that either blow filtered air down onto the work surface (positive pressure) or exhaust filtered air to the outside (negative pressure), based on the nature of the application. Below is a guide to understanding the different components of your cleanroom hood.

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A Smarter Way to Use Cleanroom Pass-Throughs

You install a pass-through chamber to reduce cross-contamination between classified and unclassified areas, but what if your pass-through could do more? Terra Universal’s double-wall Smart Pass-ThroughTM is the first to offer unique, state-of-the-art service alerts and condition-monitoring technology. This translates into time and cost savings, plus increased efficiency.  Keep reading to find out more about the ways that the Smart Pass-Through guarantees the cleanliness you’re paying for.

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Dual Purge™ & NitroWatch™: The Dynamic Duo of Humidity Control

Desiccators are a safe means of storage for highly-sensitive samples or materials. A continuous purge of nitrogen or other process gas creates the positive pressure environment that’s conducive to a contamination- and humidity-free desiccator. But, what if a purging system allowed your desiccator to do more than just store parts? What if it also automatically reduced nitrogen costs and prevented overpressure? Terra’s Dual Purge system does exactly that—and when it’s paired with the NitroWatch humidity control system, the relative humidity percent set-point is automatically monitored and maintained. Keep reading to find out how this dynamic duo has changed the way we use desiccators.

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How Do LED Lights Save Money?

Light-emitting diodes, more commonly referred to as LEDs, are semiconductors that emit light when an electrical current is applied to the component. Even though LEDs have been around since the early ‘60s, it is only in recent years that white LED bulbs have become more commonly used as a substitute for other industrial and household lighting systems. Their rising popularity is due, in part, to the positive impact they have on energy-efficiency.  Find out how LED lights are saving the planet, one lumen at a time.

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Making Sense of Biological Safety Levels

Biological safety Levels (BSLs) are prescribed by the CDC (Centers for Disease Control and Prevention) to inhibit contamination of a work environment and ensure worker safety by outlining operating procedures and atmospheric controls. If you’ve read the BSL guidance document, you may have found the infection-rate distinctions and cabinet classes hard to conceptualize. Here, we summarize section IV of the Biosafety in Microbiological and Biomedical Laboratories, 5th Edition.

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The Importance of Airflow Uniformity

In a critical environment, FDA, ISO, and cGMP requirements rule! Cleanliness relies considerably upon fan/filter units (FFUs), and a poorly designed FFU can mean the difference between a clean space and a non-compliant room. Some commercial FFUs appear to meet minimum standards of cleanliness but, by failing to create uniformity in velocity and flow, instead contribute to an unclean work place and negate the clean environment you’ve worked so hard to create.

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