As with any application requiring respiratory protection, which respirator cartridge you may need depends on the type of paint and its chemical make-up. It is always best to consult the Safety Data Sheet (SDS) to review the composition information (Section 3 of the SDS) and to see if a respirator suggestion is provided (Section 8 of the SDS). Some other factors that need to be known before a decision is made about appropriate respiratory protection are:
Airborne concentration of the contaminant in question
Frequency of use (e.g., continuously, intermittently) throughout the shift
Temperature
Humidity
It is essential that when looking for an appropriate chemical cartridge for any application that you understand and know all the variables that potentially impact the decision process.