Weller FT91000042 - Filter Set for Zero Smog 4V (Main Filter + 10x Pre-filters)
Designed to effectively filter a very wide range of chemicals and particles. The Main filter comprises a HEPA class H13 particle filter + 2,2kg granulated media. This granular media, comprising of 50% Activated Carbon and 50% KMnO4 (Potassium Permanganate), is the best solution for soldering since fluxes contain so many varying and harmful chemicals.
The pack of 10 Pre-filters is of fine dust class F7.
Depending on application and use, each prefilter can last a month and the main filter should be changed after a year.