| 摘要 |
An indicator (13) for an absorbent product (1) provides an indication of the detected pH value. In order to detect potentially harmful conditions of pH within the product, the indicator means are arranged to selectively indicate pH values of 6.5 and above. In preferred embodiments, these indicator means may selectively indicate pH values of 6.7, 6.9, 7.1, 7.3 or 7.5 and above. A terpolymer or other indicator may be used as the selective pH indicator.
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