Marble Chips 6–9mm – 1kg (Calcium Carbonate)

Marble Chips (6–9mm), also known as Calcium Carbonate Lumps, are supplied in a practical 1kg pack, ideal for routine use in school science laboratories. Produced to Laboratory Reagent (LR) grade, these natural limestone chips are well suited to chemistry experiments that require a consistent and reliable carbonate source.

Identified by CAS No. 471‑34‑1 and classified as Not Regulated for transport (UN: NR), marble chips are straightforward to store and handle in educational environments. The controlled 6–9mm chip size ensures predictable reaction rates, making them particularly effective for classroom practicals and demonstrations.

Marble chips are a core material in secondary‑level chemistry, valued for their durability and clear reaction behaviour when used with acids. Clear labelling supports safe handling in line with COSHH and standard school laboratory procedures.

Key Features

• Marble Chips (Calcium Carbonate)
• Chip size: 6–9mm
• 1kg pack – ideal for smaller class practicals
• Laboratory Reagent (LR) grade
• CAS No: 471‑34‑1
• UN Classification: Not Regulated (NR)
• Natural limestone with consistent sizing
• Clearly labelled for educational laboratory use

Ideal for School Science Lessons

Marble chips are an essential resource for KS3, GCSE, and A‑Level chemistry lessons, supporting a wide range of practical investigations when used under appropriate supervision. They are commonly used for:

• Producing carbon dioxide gas in acid–carbonate reactions
• Investigating reaction rates and surface area effects
• Exploring the properties of carbonates
• Supporting lessons on chemical reactions and gases
• Developing practical skills and safe laboratory techniques

Reliable, reusable, and closely aligned with the secondary science curriculum, these 1kg marble chips provide an accessible and effective way for students to observe fundamental chemical principles in action.