The “CARBOCONT” purifier is equipped with class F9 (EN779) multiple pocket prefilters and is suitable in all those cases where solid particulate are present together with the VOCs. The prefilters, installed on rails, have a quick replacemen systemt and are easily accessible thanks to the convenient side doors equipped with a micro position. Built in sheet metal on a tubular steel reticular structure, it is equipped with a series of activated carbon containment cells, arranged opposite but inclined, to ensure a perfect homogeneity of the air flow over the entire section. For each cell there is an upper hatch for loading and a lower shutter for emptying at one meter from the ground. The structure is characterized by a particular infill of the sides with special panels in Akrabond (a sandwich of aluminum and plastic material), after painting the carpentry with primer and gray enamel. The explosion vent panel certified ATEX EX II D with EC type-examination certificate No. EUM1_10_ATEX_0298 is installed on the roof of the purifier. These models can be optionally equipped with a specific carbon weighing system, realized by inserting under a cell, a double membrane with particular sensors that transmit the load value to the digital instrument with the weight display; the cell in question, used as a sample of the weight increase, is made sliding on special rails with relative rubber seals mounted in favor of the flow and is the only solution to evaluate the saturation degree of the Activated Carbon and therefore to replace/regenerate it.