"orange de méthyle"

See Dramatic Color Changes

Ideal for classroom use, this general purpose pH paper provides a distinct color match for each pH unit from 1 to 14.

No Color Chart Necessary.

Pocket sized vials for pH testing.

Use this paper to cover both the A range (2-4-6-8-10) and the B range (1-3-5-7-9-11) of the pH scale.

The indicator on these strips won’t contaminate the solutions the strips are testing.

The Ultimate in Wide Range, General Purpose pH Papers.

Covers Full pH Range.

Includes Color Comparison Chart.

Provides a simple, fast, economical method of pH measurement

Works Directly on a Soil Sample, Eliminating the Need for a Soil Extract

Each stoppered vial contains 100 (1.8 x 2") strips.

Make strong red cabbage juice in a minute! Red Cabbage Jiffy Juice is a very stable and easy to use red cabbage extract powder.

Use Hydrion A to test in the range of 2-4-6-8-10 and Hydrion B for the range of 1-3-5-7-9-11. Both strips let you test the pH scale in 2.0 units.
Includes: color chart.

Test the pH scale from 0-11 in 1.0 units and from 12-14 in 0.5 units.

Add protein testing to your urinalysis procedures.