You need to protect sensitive samples, but you don’t want to overpay. Below is a list of application descriptions to help choose the best desiccator storage system for your application and budget.
Inert nitrogen gas is commonly used in laboratories to control the atmosphere for highly sensitive equipment and procedures. The best way to maintain the environment in a desiccator cabinet, glove box, or similar enclosure, is to automatically purge the environment with nitrogen or argon gas. Because these processes happen automatically based on humidity set-points, smart controllers and sensors allow for more trackable, traceable, and efficient results.
On a grand scale, every desiccator cabinet looks similar: air-tight chambers, meant to keep components inside safe from humidity and particulate contamination during storage. It’s not until you need one that you consider what distinguishes one desiccator from the next, and how those differences will affect the material you need to preserve. So if you’re wondering what kind of desiccator cabinet is available, what problems to avoid and what features are used to achieve superior desiccation, read on.
Terra offers desiccator and desiccator cabinet designs for every purpose - whether it be for transportation, short term or long term storage, these dry cabinets protect sensitive parts and materials of all shapes and sizes from moisture damage, particle contamination, electro-static discharge, and more. Find out which design best fits your needs!
Forget about renting nitrogen tanks — laboratory applications aren’t on the same level as buying helium for a kid’s birthday balloons. Critical operations can’t wait for resupply. What happens when production stops because the gas supply has depleted, or when valuable experiments or products are ruined because of moisture exposure? As far as the old-fashioned nitrogen delivery via tank and truck, why wait to have crucial laboratory supplies left on the cleanroom stoop like old milk bottles? How much time should personnel have to spend refilling each tank? And where in the space-starved facility should the bulky supplies wait for use?
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.
On a properly aligned, level cabinet, all door latches are engaged directly
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.
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 (static) resides on the surface of, rather than within, the charged nonconductive object.
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 heavier air is then purged out of the bottom.
Failure to maintain the appropriate
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.
Terra's stainless steel door frames eliminate
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.
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 circuits are packaged in plastic encapsulants