Use of A2 filters instead of AX filters
Worth knowing about differences on A2 filters and AX filters
In special situations where there is no access to so-called AX filters, it is possible to use so-called A2 filters instead of AX filters. However, this should only be done after a careful, concrete assessment of the work situation, including which low-boiling solvent is in use.
The prerequisite for being able to use the A2 filter instead of the AX filter is that the A2 filter, like the AX filter, is only used as a disposable filter and is only used under the conditions with regard to the maximum permitted use concentration and the maximum permissible use time which is applicable for the application. of the AX filter. Refer to the instruction manual for the AX filter.
The difference between an AX filter and an A2 filter is a difference in their capacity.
The AX filter has a somewhat larger capacity than the A2 filter, but in addition, the two filter types function in the same way, both containing ordinary active carbon which binds solvent vapors by a so-called adsorption.
However, due to the lower capacity of the A2 filter compared to the commonly used AX filter, more frequent filter changes have to be expected. The lifetime of the A2 filters will thus be shorter than you are used to for the AX filters. It must therefore be instructed that it is very important to immediately change the filter if one can start to smell that the solvent penetrates the filter.
If you use a filter change routine so that AX filters are usually changed according to a plan, the frequency for filter change must be increased as long as you use A2 filters instead of AX filters.