PLAS-LABS
Frequently asked questions
Common questions about PLAS-LABS from 3G Electric.
What is the difference between PLAS-LABS non-vacuum desiccators and vacuum desiccators?
PLAS-LABS non-vacuum desiccators are designed for ambient pressure operation, using gas ports to purge with inert gases or dry air to maintain a low-humidity environment. They are not intended to withstand vacuum. Vacuum desiccators, by contrast, are built to handle negative pressure and typically have thicker walls and a different sealing mechanism. Non-vacuum models are suitable for storage of moisture-sensitive materials where vacuum is not required. They offer the advantage of simpler operation and often larger interior volumes for a given footprint.
What capacities are available in the PLAS-LABS acrylic desiccator line?
The PLAS-LABS non-vacuum desiccators supplied by 3G Electric come in capacities of 0.88 cu ft, 1.8 cu ft, 3.1 cu ft, and 5.59 cu ft. Overall widths range from 12 inches to 24 inches. These sizes cover a range of storage needs, from small benchtop units to larger cabinets. The rectangular shape allows efficient use of interior space. Specific models include the 860-CGA/NS (5.59 cu ft, 12 in width), 860-CG/NS (1.8 cu ft, 12 in width), 863-CG/NS (3.1 cu ft, 24 in width), and others with varying features such as built-in hygrometers or Slip-Away hinges.
Can PLAS-LABS desiccators be purged with nitrogen or argon?
Yes, PLAS-LABS non-vacuum desiccators with gas ports are designed for purging with inert gases such as nitrogen or argon. The gas ports allow connection to a regulated gas supply, enabling displacement of moist air and maintenance of a dry, inert atmosphere. This is useful for storing oxygen- or moisture-sensitive materials. The acrylic construction is compatible with these gases. For optimal results, a low flow rate and proper exhaust management are recommended. Some models include a built-in hygrometer to monitor internal humidity during purging.
What is the purpose of Slip-Away hinges on PLAS-LABS desiccators?
Slip-Away hinges are a feature on certain PLAS-LABS desiccator models, such as the 863-CG/NS and 5.59 cu ft unit with 24 in width. These hinges allow the door to be easily removed or swung completely clear of the opening, providing unobstructed access for loading and unloading. This is particularly helpful when handling larger items or when the desiccator is placed in a confined space. The hinge design also facilitates cleaning and maintenance. Slip-Away hinges are a practical alternative to fixed hinges where frequent access is required.
How does the built-in hygrometer on PLAS-LABS desiccators work?
The built-in hygrometer on models like the 0.88 cu ft PLAS-LABS desiccator (18 in width) provides a direct reading of relative humidity inside the chamber. It is typically a dial-type indicator mounted on the front or side of the unit. This allows users to monitor the effectiveness of desiccant or gas purging without opening the desiccator. When humidity rises above a set threshold, desiccant can be regenerated or gas flow adjusted. The hygrometer is a mechanical device and does not require power. It is a convenient feature for applications where continuous humidity control is critical.
What materials are PLAS-LABS non-vacuum desiccators made from?
PLAS-LABS non-vacuum desiccators are constructed from clear acrylic. Acrylic offers good chemical resistance to many substances, high clarity for visual inspection, and moderate impact strength. It is lightweight compared to glass and less prone to breakage. However, acrylic can be attacked by strong solvents, acids, or bases, so compatibility with the stored materials should be verified. The clear walls allow users to see contents and desiccant condition without opening the chamber. The material is also easy to clean with mild soap and water. For applications involving aggressive chemicals, alternative materials may be required.
