ACID CLEANING STRIPPER WITH VISUAL DOSAGE AND RINSING INDICATOR

摘要

<P>PROBLEM TO BE SOLVED: To provide a liquid stripper containing a coloring indicator exhibiting different colors according to acid concentration and polarity of a stripping solution and showing color changes in the range of pH 0-3, especially in the range of pH 0-2, and in the range of pH 0-1 advantageously. Ž<P>SOLUTION: The strong acid stripper comprises one or more kind of strong acid and a visual dosage indicator allowing visual check at an unmeasurable pH (pH lower than 1) in particular. The indicator also exerts a rinsing check function, that is, a neutralization check function. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž