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Nuo tai (Chinese: 挪抬, literally "move and shift") is a typographical device used in written Chinese to denote respect for the person being mentioned. It leaves a full-width (1 character wide) space before the first character of the person; it can be represented as Unicode character 3000 ('　').
http://en.wikipedia.org/wiki/Tai_tou


A blank solution is a solution containing little to no analyte of interest, usually used to calibrate instruments such as a colorimeter. According to the EPA, the "primary purpose of blanks is to trace sources of artificially introduced contamination."
http://en.wikipedia.org/wiki/Blank_(solution)

An analyte, or component (in clinical chemistry), is a substance or chemical constituent that is of interest in an analytical procedure. Grammatically speaking, experiments always seek to measure properties of analytes—analytes themselves can never be measured. For instance, one cannot measure a table (analyte-component) but, the height, width, etc. of a table can be measured.
http://en.wikipedia.org/wiki/Analyte