Rombouts filter papers are made with natural cellulose fibres and contain no adhesives or plastics. They are bio-degradable and, once used, can go in your food, green or general waste. We only use chlorine-free, oxygen bleached ECF Cellulose Paper (ECF = Elementary Chlorine Free), this reduces the papery taste that you can often get with other filter papers, and has much less environmental impact than traditional chlorine-bleached papers.