Desiccators Explained: How to Keep Samples Moisture-Free in the Lab

Desiccators are essential in laboratories for protecting samples, reagents, and sensitive materials from moisture. Whether used in schools, research facilities, or industry, they provide a controlled, dry environment that preserves sample integrity and prevents contamination. For Australian laboratories, choosing the right desiccator can improve efficiency, reduce waste, and extend the shelf life of critical materials.

Plain desiccators are commonly used for general storage of dry reagents or moisture-sensitive compounds. They rely on desiccants such as silica gel to absorb water vapour. Vacuum desiccators, on the other hand, allow air to be removed with a vacuum pump, creating a low-pressure environment that enhances drying efficiency. This makes them ideal for applications in analytical chemistry, pharmaceuticals, and materials science.

Material choice is also important. Glass desiccators provide clarity and chemical resistance, while polypropylene (PP) or polycarbonate options offer durability and shatter resistance, perfect for teaching labs or environments where safety is a priority. LabChoice Australia supplies a wide range of desiccators, ensuring moisture-free storage for every laboratory setting.

FAQs

What is the difference between a plain and vacuum desiccator?
Plain desiccators use desiccants for passive drying, while vacuum desiccators create a low-pressure environment for faster, more efficient moisture removal.

Which materials are desiccators made from?
They are typically made from glass, polypropylene, or polycarbonate, depending on durability and visibility needs.

Are desiccators only used for chemicals?
No, they are also used to protect biological samples, electronics, and hygroscopic powders.

Can LabChoice desiccators be autoclaved?
Yes, polypropylene and borosilicate glass desiccators are autoclavable, depending on the model.

Do LabChoice desiccators meet international standards?
Yes, they are designed for ISO-compliant laboratory use.

References

• ISO 13104: Laboratory Glassware – Desiccators
• ACS Laboratory Drying Techniques
• University of Queensland Lab Equipment Guide
• NIST Material Preservation Standards
• ASTM Laboratory Equipment Durability Guidelines