An iontophoresis device includes an active electrode assembly which comprises an active electrode element and an outermost active electrode ion selective membrane that caches an active agent. The methods may involve including an additive when applying the TMAH to the material to be etched. An episodic creator creates an episodic application by making changes to display elements associated with a presented placeholder object. Processing the cracked airfoil finite element model includes accessing the cracked airfoil finite element model, computing a modal stress intensity factor of the cracked airfoil finite element model using fracture mechanics based finite element analysis, and computing a vibratory SIF based, at least in part, on the modal SIF and the at least one vibration response parameter. The method includes providing a first detector, determining whether a radio frequency signal in a predetermined frequency range received by the walkie-talkie belongs to a non-standard squelch signal by using the first detector, and if so, stopping the walkie-talkie from receiving subsequent radio frequency signals. Furthermore, the present invention relates to a method for producing the formulations according to the invention and the use thereof.