High-performance Black Ribbon ash paper filters offer rapid filtration (up to 10 seconds) with a large pore size (12-15µm). Their soft, loosely structured, and highly porous design makes them ideal for filtering flocculent and coarse precipitates, colloids (including iron, aluminum, chromium hydroxides; copper, bismuth, cobalt, and iron sulfides; and various organometallic precipitates), and for silicon determination in steel analysis. These 150mm diameter filters (100 pack) are a top choice for analytical applications.
US: temporary delays — postal services aligning new import rules, 
EU: 1–2 weeks, 🌍 Worldwide: 1–4 weeks ✈️