This mask is suitable with A2P3 Specification for the harder use in professional environments, is just as good, recommended to work on the house and yard.
Because the mask is not exchangeable disposable filter has, it is in the nature of things that the mask is worn out after a while, that is, the filter was added a maximum amount of pollutants and you have to buy a new mask.
Here you will find on this - not insignificant - Stand no information in the article descriptions of the dealer.
On the side of the manufacturer can be found in the specifications, an indication that the mask in professional (Varnish) environment has a service life of at least one month.
It should be noted:
1) This information is kept conventionally with security and the mask has thereby certainly not empty.
2.) The figure refers to a - for hobby applications - very extreme environment, therefore the use in confined spaces where solvent vapors present in hazardous concentrations.
In the application at home so probably loose a multiple of this 30 x 8h be = 240 hours in it. Rather, the two or three times if, for example working in the fresh air.
So does the hour healthy breathing air with this mask 1 to max. 10 cents. (This should be a value their own health)
I hope this review has been informative for you.