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Interchangeable stopper Class A measuring cylinders supplied by LabChoice Australia provide certified volumetric accuracy and secure sealing for high precision analytical workflows, titration preparation and regulated laboratory environments. Manufactured from premium BORO 3.3 borosilicate glass that complies with ISO 3585 and ASTM E438 Type 1 Class A standards, these cylinders offer exceptional thermal stability, chemical resistance and dimensional precision. Their Class A accuracy conforms strictly to ISO 4788 and ASTM E1272 volumetric standards, supporting traceable and reproducible liquid measurement.
Each cylinder is fitted with a precision ground glass stopper manufactured according to ISO 383 and ASTM E676 taper joint specifications, ensuring an airtight seal and full interchangeability with laboratory jointed glassware. This stopper design prevents evaporation, contamination and atmospheric ingress during measurement, storage and reagent preparation. The tall, narrow geometry allows accurate meniscus alignment, while the sharply defined, permanently fused graduations support precise volume reading. The durable BORO 3.3 construction ensures compatibility with corrosive chemicals, solvents and hot liquids.
Interchangeable stopper Class A measuring cylinders are widely used in pharmaceutical laboratories, environmental analysis, petrochemical testing, food and beverage QC, water treatment facilities and university research environments. Their ability to maintain sealed volumetric conditions makes them ideal for preparing standard solutions, storing calibrated volumes, conducting moisture sensitive workflows and supporting validated analytical methods that require strict control of environmental exposure.
All interchangeable stopper Class A cylinders supplied by LabChoice Australia undergo ISO 9001 aligned quality control inspection. This includes verification of ISO 4788 volumetric tolerances, stopper joint conformity checks, dimensional accuracy testing, graduation clarity assessment, thermal shock testing and chemical resistance evaluation conducted in accordance with ASTM D543 principles where applicable. Cylinders are fully validated for compliance with ISO 3585 and ASTM E438 borosilicate performance requirements, ensuring long term reliability and certified precision in demanding analytical environments.