Test Tubes, Round Bottom with Rim, Borosilicate Glass (BORO 3.3)
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Test tubes with rim supplied by LabChoice Australia provide durable, chemically inert vessels for heating, mixing, culturing and general sample handling across teaching, analytical and industrial laboratories. Manufactured from high clarity BORO 3.3 borosilicate glass that complies with ISO 3585 and ASTM E438 Type 1 Class A standards, these tubes deliver exceptional thermal shock resistance, chemical durability and long term structural reliability. The fire polished rim enhances mechanical strength and minimises chipping during repeated handling, washing and heating cycles.
Each test tube features uniform wall thickness, high clarity glass for effortless sample observation and a smooth rounded base that supports efficient mixing and heating. The inert BORO 3.3 composition ensures compatibility with acids, alkalis, organic solvents and biological media while maintaining sample purity. The rimmed design provides added strength for use with test tube holders, racks, centrifuge adapters and flame based heating procedures.
Test tubes with rim are widely used in microbiology, clinical analysis, chemical reaction studies, qualitative testing, culture preparation, environmental sampling and educational science programs. Their robust construction supports heating over Bunsen burners, immersion in water or oil baths, flame sterilisation where appropriate and repeated autoclaving. The clear glass design facilitates visual tracking of reactions, precipitate formation, phase changes and sample clarity during routine workflows.
All test tubes with rim supplied by LabChoice Australia undergo ISO 9001 aligned quality control inspection. This includes dimensional verification, wall thickness measurement, rim roundness and strength assessment, thermal shock testing and clarity evaluation. Tubes are further validated to ensure full compliance with ISO 3585 and ASTM E438 performance requirements for borosilicate glassware. These rigorous measures ensure consistent, safe and long lasting performance for laboratories requiring high quality, precision engineered test tubes.