Hollow Stoppers, High Quality Borosilicate Glass (BORO 3.3), Heavy Quality
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Hollow glass stoppers from LabChoice Australia are designed for secure, leak-free closure of laboratory flasks, condensers, and other ground-glass apparatus. Their precision-ground fit ensures tight sealing without the need for lubricants, making them ideal for analytical, chemical, and educational laboratories requiring consistent performance.
Constructed from high-grade borosilicate glass (BORO 3.3), these stoppers offer superior resistance to heat, chemical corrosion, and mechanical wear. The hollow design reduces mass, minimising thermal expansion and improving heat distribution during experiments, particularly in distillation and reflux setups.
Manufactured in compliance with ISO 3585 and ASTM E438 standards, LabChoice hollow stoppers provide exceptional clarity, dimensional accuracy, and reusability. Trusted across Australian laboratories, LabChoice Australia ensures every stopper meets international specifications for durability and compatibility in demanding research environments.
Every hollow stopper supplied by LabChoice Australia undergoes ISO 9001 aligned quality control procedures. This includes dimensional verification of the taper, bore diameter checks, clarity inspection and evaluation of surface finish to ensure smooth insertion and secure sealing. Stoppers are examined for structural integrity, internal uniformity and freedom from defects before packing. These quality measures ensure dependable performance in academic institutions, industrial laboratories and research facilities requiring precise and versatile sealing components.