A voltage protection device and method is provided to prevent accidental triggering of an silicon-controlled rectifier unless the electrostatic discharge is at a predefined threshold above the normal power supply operating voltage or below the ground supply operating voltage. The assay includes a solid surface such as a nitrocellulose membrane. 25 mm which is positioned downstream from the hyperpolarized noble gas generating cell. An instant messaging session between the guest user and the registered user is facilitated. The second microlenses are smaller than the first microlenses.