Some embodiments of the present invention disclose a shelving system having one or more support posts with a plurality of shelf connectors connected to the side of the support post. As fluid enters the first diafiltration cartridge, the hydrogenion concentration is reduced by exposing it to an acidic solution such as citric acid across a filter membrane. Nonuniform parameters of interest of structures which result from a nonuniform etch profile during the etching of a mask in which all the structures were identical can be avoided for by altering the mask employed in specifying the etch area so as to compensate for the etch profile. Multiple functions per task are supported, and status information is provided, all from an application launcher view. The correlation processing includes several elementary correlation processings respectively performed with the correlation signals and each delivering initial correlation values, as well as a summation of the homologous initial correlation values respectively delivered by the elementary correlation processings so as to obtain the correlation values.