INK COMPOSITION FOR DETECTING CARBON DIOXIDE, CARBON DIOXIDE INDICATOR USING IT, PACKAGING BODY WITH CARBON DIOXIDE INDICATOR DISPOSED THEREON, AND PIN HOLE DETECTING METHOD USING IT

摘要

PROBLEM TO BE SOLVED: To easily check generation of pin holes and defective sealing. SOLUTION: A carbon dioxide indicator to which an ink composition for detecting carbon dioxide containing one or more kinds of pH indicators, a binder and a solvent, and capable of easily and visually checking any color reaction of an indication unit by the carbon dioxide concentration is applied, and a vessel for chemicals which is formed of a carbon dioxide permeable plastic and stores the chemical containing bicarbonate are packaged in a gas- substituting manner in a carbon dioxide atmosphere.