Stoppers supplied by LabChoice Australia provide secure, airtight sealing for flasks, test tubes, reagent bottles and general laboratory vessels used across teaching, analytical and industrial environments. Available in premium rubber, solid or hollow BORO 3.3 glass, and laboratory grade plastic formulations, these stoppers are engineered to support safe containment, contamination control and reliable sealing performance. Glass stoppers comply with ISO 3585 and ASTM E438 Type 1 Class A standards, ensuring chemical inertness, thermal stability and dimensional consistency. Rubber stoppers follow the elastomer performance principles evaluated under ASTM D2000, while polypropylene stoppers align with ISO 10993 biocompatibility frameworks and material behaviour expectations outlined in ASTM D4101.
Rubber stoppers provide strong sealing performance, flexibility and chemical resistance for routine laboratory use. Their resilient structure supports repeated insertion and removal without cracking, while maintaining tight closure against aqueous solutions, acids and mild solvents. Glass stoppers offer fully inert, reusable sealing for chemical storage, titration setups and long term reagent protection. Their precision ground surfaces create smooth, leak free joints that maintain compatibility with BORO 3.3 laboratory glassware. Plastic stoppers provide lightweight, shatter resistant sealing options ideal for educational labs and high throughput environments.
Stoppers are widely used in sample storage, solution preparation, distillation setups, filtration assemblies, culture preparation and general laboratory workflows. Hollow glass stoppers allow secure venting or connection to ancillary equipment, while solid stoppers support containment of volatile or sensitive materials. PP and rubber variants support economical sealing solutions for daily tasks where repeated cleaning and impact resistance are essential.
All stoppers supplied by LabChoice Australia undergo ISO 9001 aligned quality control inspection. This includes dimensional verification, surface finish assessment, taper conformity checks for glass stoppers, chemical resistance evaluation under ASTM D543 testing principles and mechanical resilience testing for rubber and PP variants. Glass stoppers are further examined for conformity with ISO 3585 and ASTM E438 requirements to ensure consistent sealing and thermal behaviour. These rigorous quality measures ensure long lasting, reliable and contamination controlled performance for laboratories requiring precision engineered sealing components.