An apparatus for producing fibers includes a raw materials supplier, a coagulating agents supplier and at least one spray nozzle. In one embodiment of the invention, a graphical user interface includes a web mail reply form that includes: one or more address fields; an input area for inputting a reply message; and a plurality of response options selectable by a user. The method includes sensing a parameter of an ambient environment adjacent the case, delivering a signal indicative of the sensed parameter to a controller, and determining a duty cycle using the controller based on the signal indicative of the sensed parameter. If so, the application commits the storage changes. The composition includes a carrier, an acid, and a quaternary phosphonium compound, or a suitable salt or solvate thereof.