Bicarbonate Indicator Solution – 500ml

Bicarbonate Indicator Solution is a ready‑prepared laboratory indicator supplied in a convenient 500ml bottle, ideal for use in educational biology and chemistry laboratories. This indicator is commonly used to show changes in carbon dioxide concentration and acidity, producing clear and easily observed colour changes during experiments.

The solution is supplied as a concentrated indicator and should be diluted 9:1 with water before use, making it economical and suitable for repeated classroom activities. It does not have an assigned CAS or UN number (CAS: n/a, UN: NR), as it is a formulated indicator mixture rather than a single pure chemical.

Clearly labelled and simple to prepare, this bicarbonate indicator is a staple resource for demonstrating biological and chemical processes in a safe and engaging way.

Key Features

• Bicarbonate indicator solution for educational use
• Pack size: 500ml
• Dilution required: 9:1 with water before use
• UN No: NR
• CAS No: n/a (prepared indicator solution)
• Produces clear colour changes linked to CO₂ levels
• Economical and suitable for repeated classroom use
• Clearly labelled for safe handling and storage

Ideal for School Science Lessons

Bicarbonate Indicator is particularly well suited to KS3, GCSE, and A Level biology lessons, where it supports investigations into respiration, photosynthesis, and gas exchange. Its colour changes are clear, gradual, and easy for students to interpret.

• Investigating photosynthesis and respiration
• Demonstrating the effect of carbon dioxide on pH
• Supporting practical work with pondweed or invertebrates
• Teaching the use of indicators in biological systems
• Developing observation and data‑recording skills

Reliable, visually engaging, and curriculum aligned, Bicarbonate Indicator Solution provides an effective way for students to explore key biological concepts through hands‑on experimentation in the school laboratory.