A technique for detecting the presence or quantity of an enzyme andor an amine within a test sample is provided. According to the present invention, it is possible to obtain high purity iron acetate using low grade magnetite and there are advantages of mass producible environmentally-friendly simple process and prevention of corrosion of facilities. The accommodating space is located inside the base and communicated with the opening. In the present invention, the lamination layer is formed on the primary surface of the plastic substrate, so that a flexible substrate structure can be obtained while preventing the substrate from deterioration with the transmission of oxygen or moisture content. The egress network also extracts and stores noise packets from the received packetized voice signal and converts the packetized noise signal into an output noise signal. When a chemically amplified negative resist composition is formulated using the polymer and processed by lithography, a fine resist pattern can be formed with the advantages of improved LER and high resolution.