There is provided a fluid management material for personal care products which distributes artificial menses according to the gushdistribution test taught herein such that it has a distribution ratio of at least about 0. The level detector detects the variation of the output voltage of the charge pump circuit for generating a control signal. The resistant layer comprises a vulcanization agent and more than 75% of an elastomer formed by at least one copolymer modified with an unsaturated carboxylic acid salt and obtained from a dien monomer and a nitrile group-containing monomer. The dry etching gas includes a mixture of a gas containing chlorine atoms and at least one gas selected from a group consisting of a gas containing oxygen atoms, a gas containing nitrogen atoms, and an inert gas. The seal structure preferably includes a sealing member which moves from a first sealed position into a second by-pass position upon pressurization of the liquid injection solution in the wet compartment of the housing assembly. The process substantially avoids the deposition of solid reaction by products in the reactor.