For added security against fraud, a financial services card such as a credit card is paired with a separate tag such as an RFID tag. An element may also be removed from the query if the element is not required. The side plug is preferably formed of a carbon fiber filled PET material; the carbon content of the side plug allows microwave curing of the epoxy adhesive used to attach the side plug to the cartridge body. Alternatively, the surface-active agents can be added to the slaked lime either during slaking or after slaking. A longitudinal axis of each of the at least one array is defined between opposite ends thereof. One can actively select which probes to send in order to be able to diagnose problems which one is particularly interested in, allowing for greater flexibility and efficiency.