英国采购需求：烧结金属过滤器，多孔金属过滤器，烧结过滤器，空气过滤，生物制药净化，生物加工

I'm looking for detailed insights regarding the filter's compliance with Class 1 standards. Can you confirm whether it fully meets these requirements? Additionally, I'd like to know if you can achieve differential filtration, specifically hydrophobic without being oleophobic, through an appropriate coating. Please provide information on the proposed porosity and grain size for the filter material and confirm that the intended permeability is isotropic. I'm also interested in the expected pressure drop across the sintered guard and the minimum particle size that can be effectively filtered (e.g., down to 0.1 µm). Lastly, it's crucial for us to understand if the filter can efficiently remove oil aerosols and vapors while retaining water moisture to ensure accurate dew point measurements.