Cafetto Spectra Descaler Powder is an eco-friendly powder descaler which visually indicates whether a descaling cycle has been successful using pH-sensitive dye compounds. Rapidly and easily removes lime scale and calcium build up from espresso machine water tanks, boilers and coffee brewers. Leaves no harmful residues and does not cause corrosion within the coffee machine. Safe to use on aluminium, brass and stainless steel. All ingredients are all rapidly biodegradable meeting international standards. It helps improve the performance and efficiency of the equipment by removing mineral deposits that can affect water flow, temperature and the overall taste of the brewed coffee. Comes in 600 g.