A container including a first tank for receiving a liquid, a second tank that is selectively pressurizable, a check valve for permitting fluid flow from the first tank to the second tank, and a manifold structure having a first port fluidically coupled to the first tank and a second port fluidically coupled to the second tank. This invention also attempts to provide a DNA chip produced by such method. Furthermore, a decoding device is disclosed for decoding the channel signal obtained by means of the encoding device. Both of the first and second CCD signals are supplied to the adjusting portion with a reference signal added. Oblique cross members of the step body provide additional protection in the event of a rear-end collision.