Ozone indicator and ozone sensor ink

摘要: The invention provides a method of detecting ozone expediently and with high sensitivity. invention, therefore, is directed to an indicator comprising (1) at least one color-change layer comprised sensor ink (2) non-color change both formed on substrate, said non-color-change layers being in such manner that part or the whole can be exposed ozone-containing atmosphere when put use. further containing anthraquinone dye having amino group selected from primary secondary groups.