Their customers are required to monitor coffee machine water tank filter replacement cycles. This is because a peek inside the water tank of their coffee machines would give an insight on a bad cup of coffee. Chalky white deposits in the water tank alert the customer to a buildup of limescale. Limescale deposits are caused by minerals like magnesium and calcium leeched from water. Reducing limescale deposits, improves the appearance, aroma and taste of the coffee beverages. A common way to maintain coffee and espresso machines is to descale the water tanks, often using chemicals and multiple brewing cycles. Descaling is very labour intensive and needs to be done on a regular basis, especially in hard water areas where limescale builds up quickly.
Therefore, BRITA® developed AquaGusto, a filter specifically designed for the water tanks present in coffee and espresso machines for commercial use. For optimum quality, the AquaGusto filter needs to be exchanged every 6 months. Brita desired a simple method to indicate this period of time passing.