Aqua Laboratory UK colloidal silver products are produced using advanced, purpose-built generators that maintain a constant current for consistent quality. Our products are rigorously tested with specialist equipment to ensure each batch meets high standards of strength and consistency. Our colloidal silver is available in 10ppm and 20ppm concentrations, with a typical particle size of .0001 to .0004 microns, making it one of the finest quality colloidal silver products available in the UK market.