Hand it is

But regardless of desire, an unambiguous answer to this question does not exist. On the one hand, theoretically, it is possible to extend the work of filters, and on the other hand it is impossible to do this. Everything will depend on the resource of the filter element itself. And so, in the case when the resource is renewable, then it is quite possible to extend its functioning for a while. But, and when cartridges for filters are not those that are subject to renewal, it is very difficult to extend the service life, and sometimes it is not at all possible.