Congo red paper, 100 units/pack
$6.00
Sale price
$6.00
Regular price
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Congo red paper, 100 units/pack
$6.00
Sale price
$6.00
Regular price
Congo Red Test Paper is used in acid washes for metal plating where pH values are very low (pH 1.0-3.0). The Congo Red indicator remains blue below pH 3.0, then gradually turns to a brilliant red above pH 5.2.
- 100 units/pack
- used to test narrow-range acidic solutions