Anton Sprint Pro Water Trap & Filter Set – M049006 3-Micron PTFE Filter For Oil Boiler Testing Sprint Pro Compatible This is a specialist water trap and filter set for oil boiler and oil burner flue gas analysis using Anton Sprint Pro analysers. When testing oil appliances, the flue gas sample contains combustion residue that's oilier and behaves differently to the particulate from a gas boiler, and a standard 1-micron PTFE filter can clog rapidly under that load. The 3-micron (3UM) PTFE filter included in this set has a coarser pore size than the standard filter — a deliberate choice for oil testing, since a finer filter would saturate too quickly with oil residue and risk coating the sensor elements. Anton's own recommendation across the Sprint Pro range is to use this 3-micron filter kit for oil appliances, and several Sprint Pro pro