Desiccators

  1. Desiccator Installation and Cleaning

    Desiccator Installation and Cleaning
    Door Alignment

    Proper alignment of doors will prevent excessive gas escape and ensure door sensor alignment. Some leakage, however, is normal. Because cabinets operate under varying degrees of positive pressure, Terra door gaskets are designed to allow controlled gas escape.

    All cabinets are checked prior to packaging to ensure proper door alignment. However, they can come out of alignment during shipping due to the inherent flexibility of plastic.

    Doors feature sensor magnets that must be aligned with the associated sensor on the desiccator door. If these magnets are misaligned, the Dual Purge™ system may not function properly, and door seals may not seat properly, allowing nitrogen leakage.

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  2. Which desiccator system is best for my application?

    Which desiccator system is best for my application?
    Consider these variables when selecting a humidity control system:
    • Humidity Requirement: Your humidity requirement is the single most important consideration. Extremely low humidity applications (under 10% RH) generally call for one of the smart controllers below.
    • Access: If you access stored materials frequently, you will need a variable-purge system that can block inrushing air when a door is opened.
    • Nitrogen Expense: A smart control system conserves nitrogen and reduces costs by up to 78%
    • Ambient Humidity: A desiccator in a humid environment requires a more efficient humidity controller than one in an arid environment.
    • Desiccator Size: Large plastic desiccators typically require more nitrogen, and a more efficient delivery system, than small ones to compens
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  3. Static Control in Desiccator Cabinets

    Static Control in Desiccator Cabinets
    • What is electrostatic discharge?
    • How is it generated?
    • How does it damage microelectronic devices?
    • How can it be controlled?
    • What are the advantages and disadvantages of static control methods available today?
    Why all the Static?

    Static electricity is an excess or deficiency of electrons on a surface. The total number of deficient or excess electrons determines the charge on that surface. A surface exhibiting an excess of electrons is charged negatively, and an electron-deficient surface is charged positively.

    How are Electrostatic Charges Generated?

    Electrostatic charges are usually generated by friction between and/or separation of two dissimilar materials, at least one of which is a nonconductor or a poor conductor of electricity. The accumulated charge (stat

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  4. Why use nitrogen to purge moisture?

    Why use nitrogen to purge moisture?
    Terra offers a comprehensive range of application-specific desiccator cabinets and nitrogen control systems. These performance concepts will help you select the system right for your application.
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    Nitrogen is the standard medium for contamination-free storage because it is relatively inert—it neither reacts with stored materials nor carries moisture—and because it can be isolated and purified relatively inexpensively.

    Desiccator cabinets must be set up so that an appropriate flow of nitrogen forces out all moisture- and contamination-laden air. Because nitrogen has a lower specific gravity than air, it is introduced into the upper section of the desiccator; the h

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  5. Why choose desiccator storage?

    Why choose desiccator storage?

    As critical components become smaller and more sophisticated, their susceptibility to moisture damage increases.

    Once absorbed by sensitive components, water creates a number of potentially disastrous conditions. Even minute traces of oxidation, the most notorious result of moisture exposure, can degrade soldering and other manufacturing processes. Because water dissolves ionic contaminants, it also alters the conductivity of the material, which in turn can degrade electrical function. Water also combines with other materials, causing harmful chemical reactions that degrade pharmaceutical samples and chemical mixtures.

    "Popcorn Effect": Moisture Damage in IC Production

    One particularly costly example of moisture-related damage is the "popcorn" effect that occurs during reflow soldering of IC packages.

    Although the vast majority of integrated circu

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  6. Why choose a Terra desiccator?

    Why choose a Terra desiccator?
    Compare Terra's Advanced Designs and Fabrication Experience

    At first glance, most desiccators look pretty similar. It's not until you put them into service—and fill them with delicate, expensive parts—that differences in quality become apparent.

    When you invest in a Terra desiccator cabinet, you benefit from 40 years of design innovation and manufacturing experience. Simply put: Terra desiccators function better and function longer.

    Doors
    The First Failure Point of a Desiccator Cabinet - Terra's full 304 stainless steel door frames offer the strongest door construction in the industry
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  7. IsoDry®: The Greatest in Desiccator Design

    IsoDry®: The Greatest in Desiccator Design

    IsoDry desiccator cabinets are the latest, patent-pending innovation in desiccators from Terra Universal. Desiccators are containers designed to reduce relative humidity (RH) for moisture-sensitive stored items, either by purging the container consistently with nitrogen, using silica gel desiccants or pulling vacuum. The IsoDry desiccators use nitrogen to accomplish this task, both in achieving and maintaining a humidity “set-point.”

     

    How do IsoDry Desiccators Work?

    Terra’s desiccator cabinets rely on a basic tenet of natural physics: buoyancy. Buoyancy is a function of density and mass between at least one fluid and another material. In our applications, it relies specifically on the fact that purified nitrogen is less dense than atmospheric air. Pumping nitrogen into an enclosed environment pressurizes both the air and the nitrogen, and the difference in densities causes the nitrogen t

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

    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.

     

    Why might my purging system be out of date?

    Many purging systems use a high volume of nitrogen (or other process gases) in order to avoid build-up of moisture inside the desiccator, as well as infiltra

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  9. 5 Interesting Ways Industries are Using Desiccator Cabinets

    5 Interesting Ways Industries are Using Desiccator Cabinets

    Desiccants, more commonly recognized as those tiny packs of silica gel found in new shoes or luggage, have dozens of useful purposes in our daily lives. Some of the most effective desiccant gels can absorb up to 40% of their weight in moisture, protecting our gym bags from mildew or our silver jewelry from tarnishing. Although quite versatile, this household method of dry storage is usually not enough to preserve highly sensitive materials from moisture or contamination. Here are five critical specimens that you’ll find in a high performance, nitrogen-purged desiccator cabinet.

     

    Semiconductors

    microelectro

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  10. What’s Causing Your Desiccator to Leak, and How Do You Fix It?

    What’s Causing Your Desiccator to Leak, and How Do You Fix It?

    When storing sensitive materials in a desiccator cabinet, unnecessarily high gas flow into the chamber or misalignment of the cabinet can lead to costly nitrogen waste. Positive pressure within a desiccator is meant to push unwanted moisture-dense air through the cabinet’s release valves and prevent the ingress of moisture-laden air. This continuous process leaks a small portion of gas, since desiccators are not 100% air-tight systems.  Let’s consider three of the top reasons why your desiccator may be leaking:

     

    Cabinet Misalignment

    10-chamber desiccator
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