Desiccator cabinets are a special type of storage equipment that maintain a low humidity atmosphere in their interior chambers. So they are used to store items that are sensitive to moisture or hygroscopic chemicals that react to water present in moisture. Special chemicals or gases are used in desiccators to achieve low humidity. They come in different sizes and varieties.
Desiccators are required in different industries, most prominently in laboratories and facilities where electronic components are manufactured. Out of the different varieties of desiccators, it’s important to choose one as per the requirement of the material to be stored inside of it. Hence, it’s necessary to know about the different specifications of desiccators cabinets to determine which one is suitable for a particular situation.
Stainless Steel Desiccators and their specifications
Desiccators are commonly made up of materials like acrylic, polyvinyl chloride and stainless steel. Acrylic is the cheapest option but it has some disadvantages. It is not resistant to alcoholic agents and it can lead to the accumulation of static charges. PVC that is static dissipated will not be affected by alcoholic cleaning agents and it’s also resistant to static charges. But the best option is stainless steel, because it provides higher resistance, rigidity and durability compared to the other two materials. It is expensive than acrylic and PVC but it has more advantages as well.
Some important specifications of stainless steel desiccator cabinets are:
- Size and Dimensions
Desiccator cabinets come in different sizes so this is something that must be taken into consideration as per the space available in the lab or facility.
- Number of Chambers
These cabinets can have anywhere between one to ten chambers, or even more in some cases. This depends totally on the requirements of the buyers. Those who need to store few and small items can get a single chamber cabinet, while multi-chamber cabinets are for facilities where large number of items or bigger materials need to be stored.
- Stands with casters
When the desiccator cabinet is fixed in a specific position, stands and casters may not be required. But if they need to be moved around in the facility then it will be necessary to have the desiccator mounted on a stand with casters.
- Display and Control panels
A control panel and display is found in most desiccators. The display mainly shows the level of humidity inside the desiccator cabinet. The control panel is used to manage the flow of gases and quantity of desiccants in order to control the humidity levels as per requirement.
- Automatic feedback mechanism
Many desiccators have a feedback system that regulates the flow of nitrogen or other desiccant automatically as per the humidity levels in the cabinets. As the moisture increases, more desiccants are fed into the unit, and when the moisture is very low, then lesser amount of desiccants are used.
- Nitrogen purging
Solely using desiccants like silica gel is not effective in desiccators. Silica takes longer time to reduce humidity to extremely low levels, and it’s not possible to control the moisture level inside the cabinet using silica get. That is why most manufacturers pass nitrogen gas through desiccator cabinets along with the desiccant as nitrogen gas reduces the humidity promptly in a short amount of time. Also, by regulating the amount of nitrogen in the chamber, the humidity inside desiccators can be controlled.
These are the important specifications of stainless steel desiccator cabinets that one must be aware of prior to purchasing.