Universal Indicator Strips – Johnson pH 1–14 (200 Strips, 10 Books × 20)

These Johnson Universal Indicator Strips provide a quick, accurate, and easy‑to‑use method for measuring pH across the full pH 1–14 range. Designed with 1 pH unit intervals, these high‑quality indicator strips are suitable for routine use in school laboratories, colleges, fieldwork, and general scientific testing.

Each pack contains 10 books of 20 strips, giving a total of 200 indicator strips, making them excellent value for class‑based practical work or frequent testing. The strips deliver clear, reliable colour changes when dipped into solutions, offering straightforward comparison against the included pH colour chart.

Key Features

• Johnson Universal Indicator Strips
• Full pH range: 1–14
• 1 pH unit intervals for clear, easy interpretation
• Supplied as 200 strips (10 books × 20 strips each)
• Fast, clean, and simple testing method
• Suitable for school labs, fieldwork, and general solution testing
• Ideal for acids, alkalis, and neutral solutions

Ideal for School Science Lessons

These universal indicator strips are perfect for KS3, GCSE, and A‑Level chemistry and general science lessons, supporting activities such as:

• Identifying acids, alkalis, and neutral solutions
• Measuring pH changes during neutralisation reactions
• Investigating acid–base strength
• Testing household substances in enquiry‑based activities
• Monitoring pH during environmental or fieldwork studies
• Rapidly assessing reaction progress in practical investigations

They give students a reliable, visual way to understand pH and the behaviour of acids and bases, helping reinforce key curriculum concepts.