Standardized chamber volume definitions in POL-EKO units
Standardized chamber volume definitions in POL-EKO® units
At POL-EKO®, we continuously work to ensure that our technical information is clear, consistent, and easy to compare. That’s why we have standardized the definitions of chamber volume and working capacity across all product materials and technical documentation.
Important clarification
The design, dimensions, and technical solutions of our units have not changed. This update applies exclusively to definitions and terminology, helping our data better reflect real user needs and supporting an informed product selection.
Chamber volume (gross / total capacity)
Chamber volume is the maximum theoretical internal volume of the chamber, measured from the inner surfaces of the walls, without taking insulation thickness into account.
In other words, it is the volume the chamber could hold if it were an ideal empty cuboid, free from any internal obstacles and structural components.
This parameter is most often used by engineers and designers for construction-related comparisons.
Working capacity (net / usable capacity)
Working capacity is the actual usable working space inside the chamber. It is the chamber volume reduced by the space occupied by permanent internal components such as fans, air channels, evaporators, heaters, or permanently installed shelves and guides.
Working capacity is the key value for end users, as it shows how much product can realistically be placed inside the unit.
Transparency and real value for the user
Gross (total) capacity will always be higher than working (net) capacity, but the latter best reflects the chamber’s real loading possibilities. That is why at POL-EKO® we place special emphasis on presenting net capacity precisely and unambiguously — a parameter that directly matters in the day-to-day work of laboratories and industrial facilities.
As you may notice on our product pages and in catalog cards, we already use the updated and standardized capacity definitions — for example, the product page photostability chamber KKS ICH 240.
We believe that precise technical information is just as important as the quality of our equipment. Thanks to standardized definitions, comparing models and selecting the right solution becomes even simpler and more transparent.