A dosing pump is used to apply the product in high-pressure Jet washes. The recommended dosing rate for hard water (400 ppm) is around 20 ml/min, trying to keep the pump level between 15 and 20%. The volume of chemical product can be reduced slightly to around 18 ml/min when using purified water. A dosing pump is used to apply the product in car wash bays and tunnels. The recommended dosing rate for hard water (400 ppm) is around 60 ml/min, trying to keep the pump at a percentage of between 50 and 60%. The volume of chemical product can be reduced slightly to around 45 ml/min when using purified water.