Australian importers of Seagull® IV Drinking Water purification systems. The finest water purification systems worldwide. Purifiers (Australia) Pty. Ltd. are the Australian importers of the "Seagull® IV" Water Purifiers, the finest drinking water purifying system worldwide. Manufactured by General Ecology, Inc. in Exton Pennsylvania USA, the "Seagull IV" Water Purifiers adopt a new revolutionary concept in water purification technology, known as "STRUCTURED MATRIX™" technology.