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Test Tube Holder Battery Replacement It is a high efficiencyA Test Tube Holder is a laboratory tool used to safely hold and handle test tubes, especially when they are hot or contain hazardous substances. Key Features: Made from metal or heat resistant plastic. Typically has a spring mechanism or a clamp to securely grip test tubes. Designed to hold test tubes of various sizes. Provides safe handling during heating or transport. Usage: Used to hold test tubes over a flame or during chemical reactions. Prevents