A method and apparatus for detecting pooling of fluid in disposable or non-disposable absorbent articles is provided. Said spraying device comprises a pressure vessel containing water and a nozzle having one or more fine openings through which water can escape from the pressure vessel, the pressure vessel being subject to a hydrostatic pressure which is by at least 2 bars greater than the ambient pressure, and the diameter of one or more nozzle openings being less than 130 \u03bcm. The valve body further includes a pressure chamber coupleable to a second fluid source and at least partially isolated from the flow passage. The polyimide production apparatus enables the production of a polyimide film which has a volatile content of 0. An actuator moves movable end assembly to change the distance between the hooks and force the hooks into engagement with the lifting blocks on an adjacent rectangular manhole cover. The first bracket has a spring clip for temporarily engaging the grip portion of a handgun, and the second bracket has a boot with an inner magnet for temporarily engaging the barrel of the handgun.