3m 4251 Vapour Mask for Organic Vapours , Mists & Particulates. Ideal solution for most organic vapour hazards including Styrene. It is essential to ensure a good face fit with this mask! Also suitable for paint spraying and welding. Please visit 3M's site to look at the specification if you are not sure.

Protection against organic vapours with BP over 65ºC. Maximum use limitation on organic vapours is 10xWEL or 1000pp, which ever is lowest of the two and for particulates 10 x WEL.