Patent ID: 7851373

Claim:
A processing method, the method comprising: providing a processing system including a first container and a second container fluidly coupled to the first container, the second container being adapted to receive and retain an overflow amount of a fluid from the first container; disposing at least one semiconductor device in the first container; disposing the fluid in the first container and a portion of the second container, the fluid continuously flowing on an outer vertical sidewall of the first container thereby forming an evaporative vertical surface during the entire duration that the at least one semiconductor device is disposed in the first container, the continuous fluid flow maintained by a continuous flow of deionized water into the first container during the entire duration that the at least one semiconductor device is disposed in the first container; and maintaining a height of the evaporative vertical surface by maintaining the fluid in the second container, wherein the height is maintained by keeping the fluid between a first lower sensor and a second upper sensor which are placed within a range of about 5 cm or less of each other, wherein the sensors are placed close to an upper edge of the first container, and wherein the evaporative vertical surface is maintained during the entire duration that the at least one semiconductor device is disposed in the first container.