Techniques for injecting encryption keys into a meter as a part of a manufacturing process are discussed. In this process, a propylene-containing gas is supplied to an aqueous solution of chlorine in the one-way flow reaction area to carry out at least part of a propylene chlorohydrin forming reaction so as to form a reaction mixture fluid containing propylene chlorohydrin and propylene andor chlorine. For any given request, the delegate component instantiates a controller component to process the event.