A cleaning assembly for containers, particularly for bottles, having a conveying device on which the containers are arranged by means of a receptacle means. The control circuit conducts assignment of addresses to the SRAM and DRAM, and stores data that must be retained over a long period of time in the SRAM. The method further includes etching the glass substrate for an etching duration to increase a diameter of an incident opening of the via and applying ultrasonic energy to the glass substrate during at least a portion of the etching duration.