A control method for controlling the amount of fluid applied on a container component surface by a high-speed fluid injection system, the injection system comprising: - a plurality of fluid injectors configured to apply fluid on a container component surface, each fluid injector comprising a valve element movable between a first closing position and a second open position, wherein the second open position of each valve element can be individually controlled to regulate the flow rate injected by each fluid injector; - fluid feeding means configured for supplying pressurized fluid to the plurality of fluid injectors; - a plurality of flowmeters, wherein each flowmeter is linked to a fluid injector, and wherein each flowmeter is configured for measuring the flow rate of the fluid injected by the fluid injector to which it is linked; - a first control device, configured for receiving a signal of the flow rate of each fluid injector and controlling at least the second open position of each valve element; - a first control loop for each fluid injector with feedback of the flow rate injected by the fluid injector, wherein the first control loop is configured for controlling the flow rate of the injected fluid by acting on the first control device configured for controlling at least the second open position of each valve element; wherein the method comprises the steps of: - providing a dynamic equivalent model of the high-speed fluid injection system; - inputting a range of reference values of flow rate (Q A - Q B); - starting the fluid injection process; - the flowmeter linked to said fluid injector measuring, for each fluid injector, the value of the injected flow rate, - the first control device comparing, for each fluid injector, the measured value of flow rate with the range of reference values of flow rate (Q A - Q B); ▪ if the value of flow rate is outside the range of reference values of flow rate (Q A - Q B), the second open position of the valve element of the fluid injector is modified; ▪ if the value of flow rate is within the range of reference values of flow rate (Q A - Q B), no action is taken. - a plurality of fluid injectors configured to apply fluid on a container component surface, each fluid injector comprising a valve element movable between a first closing position and a second open position, wherein the second open position of each valve element can be individually controlled to regulate the flow rate injected by each fluid injector; - fluid feeding means configured for supplying pressurized fluid to the plurality of fluid injectors; - a plurality of flowmeters, wherein each flowmeter is linked to a fluid injector, and wherein each flowmeter is configured for measuring the flow rate of the fluid injected by the fluid injector to which it is linked; - a first control device, configured for receiving a signal of the flow rate of each fluid injector and controlling at least the second open position of each valve element; - a first control loop for each fluid injector with feedback of the flow rate injected by the fluid injector, wherein the first control loop is configured for controlling the flow rate of the injected fluid by acting on the first control device configured for controlling at least the second open position of each valve element; - providing a dynamic equivalent model of the high-speed fluid injection system; - inputting a range of reference values of flow rate (Q A - Q B); - starting the fluid injection process; - the flowmeter linked to said fluid injector measuring, for each fluid injector, the value of the injected flow rate, - the first control device comparing, for each fluid injector, the measured value of flow rate with the range of reference values of flow rate (Q A - Q B); ▪ if the value of flow rate is outside the range of reference values of flow rate (Q A - Q B), the second open position of the valve element of the fluid injector is modified; ▪ if the value of flow rate is within the range of reference values of flow rate (Q A - Q B), no action is taken. ▪ if the value of flow rate is outside the range of reference values of flow rate (Q A - Q B), the second open position of the valve element of the fluid injector is modified; ▪ if the value of flow rate is within the range of reference values of flow rate (Q A - Q B), no action is taken.