Universal Indicator Paper – Johnson pH 1–11 (200 Strips)

This Johnson Universal Indicator Paper provides a simple, reliable, and effective method for measuring acidity and alkalinity across a broad pH range from 1 to 11. Designed for educational laboratory use, it offers clear colour changes that allow quick visual assessment of pH levels during practical investigations.

The indicator paper features distinct colour intervals at every 1 pH unit, making it easy for students to estimate pH values accurately and consistently. Supplied as 10 books of 20 strips, the total of 200 strips makes this set ideal for regular classroom use and whole‑class practical activities.

Requiring no additional apparatus, these indicator strips are convenient, economical, and well suited to both student experiments and teacher‑led demonstrations. The trusted Johnson brand ensures dependable performance in busy school science laboratories.

Key Features

• Universal indicator paper – Johnson brand
• pH range: 1 to 11
• 1 pH unit colour intervals for easy interpretation
• Fast, clear visual pH measurement
• Supplied as 10 books × 20 strips
• Total of 200 indicator strips
• No additional testing equipment required
• Ideal for educational laboratory use

Ideal for School Science Lessons

Perfect for KS3, GCSE, and A‑Level chemistry and biology, this universal indicator paper supports practical learning about acids, alkalis, and neutralisation. Its ease of use makes it especially suitable for student‑led investigations and quick comparative testing.

• Testing acidic, alkaline, and neutral solutions
• Investigating pH changes in chemical reactions
• Supporting environmental and biological studies
• Comparing everyday substances safely in the classroom
• Reinforcing understanding of the pH scale

Clear, convenient, and classroom‑ready, this Johnson Universal Indicator Paper (pH 1–11) is an essential consumable for delivering engaging, accurate, and curriculum‑aligned science practicals.