"Micro Essential"

Covers Full pH Range.

The Ultimate in Wide Range, General Purpose pH Papers.

Includes Color Comparison Chart.

See Dramatic Color Changes

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.

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.