Since the 1827 creation of the product, trademark recognition by the Royal Crown on the "Royal" title of highest honor. Filter 100% of the UK custom made. The production process in accordance with international quality management BS-ENISO9002 requirements, using 0.5 micron pore size ceramic diatom mud added silver elements (Sliver) made pottery firing, health and safety.

2 International NSF certification

Filter in line with the National Sanitation Foundation (NSF) testing and certification.