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Test tubes are cylindrical glass or plastic containers used for holding, mixing, and heating samples in laboratories. They work by providing a durable and heat-resistant vessel for chemical reactions and sample storage. In labs, they are essential for microbiology, chemistry, and clinical testing. Types include borosilicate glass tubes, plastic tubes, and screw-cap tubes. Better Equipped, as a trusted UK based lab supplier, offer a wide range of test tubes to meet all your experimental needs.