External fan as added benefit
Only if the fan is positioned in front of the activated carbon filter, existing airborne pollutants will penetrate sufficiently deep into its pores. For this reason SEKA exclusively offers protective ventilation systems with fans mounted on the outside of the filter.
In contrast to this push principle systems based on the pull principle are only able to use a fraction of the activated carbon. This means their filter effect is considerably lower than that of pushing systems. In addition, they also cause a considerable pressure drop inside the filter. As a result, the activated carbon will be saturated faster with water vapor, which greatly reduces its ability to absorb pollutants.
Against sulfur and ammonia
We only offer ABEK filters for atmospheres characterized by a high content of both sulphur-containing gases and ammonia. However, this situation is very rare and only refers to very few applications. In the case of a high level of hazardous sulphur-containing gases, we recommend the use of pure E coal filters.
Our activated carbon filters come in cartridges. This allows the effective combination of filters with different carbon qualities, such as separated E and K filters.