Blue and red litmus paper and phenophthalein strips are mixed-indicator tests designed for fast, accurate, and reliable pH solution testing.
- Instant pH readings
- Mixed-indicator
- Accurate for a wide range of routine pH testing
- Convenient and portable for field use
- Choice of blue and red litmus paper or phenophthalein strips
- Color change in pH solutions ranging from approximately 5 to 8
Universal indicators
Cytiva's acid-alkali litmus paper is impregnated with a mixture of pH indicators. They assume a color specific to sample pH upon contact with a sample.
- Red litmus paper turns blue in alkaline solutions
- Blue litmus paper turns red in acidic solutions
- Phenophthalein strips are colorless in acidic solutions and pink in basic solutions
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Product | Product Name | Price | |
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2600-201A | Acid-Alkali Universal pH Indicator, Blue Reel, 7 mm × 5 m | 21.82 USD |
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2600-601 | Acid-Alkali Universal pH Indicator, Blue Strip Book, 20 strips each (10 pcs) | 101.36 USD |
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2600-602 | Acid-Alkali Universal pH Indicator, Red Strip Book, 20 strips each (10 pcs) | 101.36 USD |
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10360300 | Acid-Alkali Universal pH Indicator, Blue Strip (100 pcs) | 21.82 USD |
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2600-204A | Acid-Alkali Universal pH Indicator, Phenolphthalein (100 pcs) | 21.82 USD |
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In Stock Stock on request Limited stock |
2600-202A | Acid-Alkali Universal pH Indicator, Red Reel, 7 mm × 5 m | 20.57 USD |
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