Enjoy Free Shipping on most orders placed online – Terms Apply

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

Read more
Select your model
Parameter {{main.activeVariantName}}
There are no available product features to display for this product variant.
{{main.calculateFootnoteIndex(feature, main.features.ownFeatures)}}
  • {{main.calculateFootnoteIndex(feature, main.features.ownFeatures)}}{{feature.footnote}}
{{referenceSection.sectionTitle}}
Parameter {{referenceSection.referenceName}}
There are no available product features to display for this product variant.
{{main.calculateFootnoteIndex(feature, referenceSection.featureValues)}}
  • {{main.calculateFootnoteIndex(feature, referenceSection.featureValues)}}{{feature.footnote}}
Something went wrong - we were not able to load your agreed MSA pricing. Please try refreshing the page.
Product Product Name Price
2600-201A Acid-Alkali Universal pH Indicator, Blue Reel, 7 mm × 5 m 21.82 USD Add to cart Get Quote

In Stock Stock on request Limited stock

2600-601 Acid-Alkali Universal pH Indicator, Blue Strip Book, 20 strips each (10 pcs) 101.36 USD Add to cart Get Quote

In Stock Stock on request Limited stock

2600-602 Acid-Alkali Universal pH Indicator, Red Strip Book, 20 strips each (10 pcs) 101.36 USD Add to cart Get Quote

In Stock Stock on request Limited stock

10360300 Acid-Alkali Universal pH Indicator, Blue Strip (100 pcs) 21.82 USD Add to cart Get Quote

In Stock Stock on request Limited stock

2600-204A Acid-Alkali Universal pH Indicator, Phenolphthalein (100 pcs) 21.82 USD Add to cart Get Quote

In Stock Stock on request Limited stock

2600-202A Acid-Alkali Universal pH Indicator, Red Reel, 7 mm × 5 m 20.57 USD Add to cart Get Quote

In Stock Stock on request Limited stock

Customers also bought

No reviews have been left for this product. Be the first to leave a review!

Leave a Review

You are not logged in.

To leave a review Register or Log In

Product Support
Looking for support assistance?

Explore Product Support like Accessories, FAQs, Flow path schemes, Maintenance, Packing procedures, Spare parts, Troubleshooting and more.


If you can't find what you need, contact us to solve your problems.

Contact Us