Vacuum Desiccators

A vacuum desiccator incorporates an enclosure, vacuum pump, and desiccant system for achieving low RH values at sustained vacuum down to 29.92" Hg. Vacuum desiccators sustain atmospheric temperature, humidity, and process-gas mixtures during product assembly, testing, anaerobic processes, or reactive material handling.

Terra Universal's nitrogen purge vacuum desiccators remove humid air and backfill the chamber with dry, inert gas to achieve neutral pressure. If needed, this process is repeated until oxygen or moisture concentration reaches the desired level. Gauges and valves preinstalled on vacuum chambers allow for careful application, monitoring, backfilling, and bleeding of vacuum pressure. The cabinet doors allow high-capacity storage, easy batch processing, and quick parts transfer.

Silica-based desiccants and canisters are economical for maintaining a dust-free enclosure with unspecified humidity requirements. Terra Universal and Bel-Art vacuum desiccators also support moisture removal via silica-gel and desiccant canisters. Disposable Desiccant Plates are an economical option for moisture removal and turn pink to indicate maximum moisture absorption. Reusable desiccant canisters provide a low-waste option; the silica-gel desiccant is reusable after oven baking.

In some cases, a vacuum chamber alone may provide adequate humidity removal without requiring nitrogen or desiccants. Ideally, the vacuum chamber is supplied with pre-treated and dehumidified air. A vacuum drying system is most effective when room air is less humid and the chamber does not require frequent access.

Terra’s Vacuum Desiccators and Vacuum Chambers are shipped fully assembled. Buy online, or contact a Terra Universal specialist via chat, email, phone, or quote request.