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Interchangeable stopper Class B measuring cylinders supplied by LabChoice Australia provide dependable volumetric performance and secure sealing for teaching laboratories, routine analytical workflows and general solution preparation. Manufactured from high clarity BORO 3.3 borosilicate glass that complies with ISO 3585 and ASTM E438 Type 1 Class A standards, these cylinders offer strong thermal stability, chemical resistance and long term durability. Their volumetric accuracy follows the tolerance limits defined in ISO 4788 and ASTM E1272 for Class B cylinders, making them ideal for everyday laboratory applications where routine precision is required.
Each cylinder includes a precision ground glass stopper manufactured in accordance with ISO 383 and ASTM E676 joint specifications, ensuring a tight, interchangeable fit that prevents evaporation, contamination and atmospheric ingress during measurement or storage. The tall, narrow body supports reliable meniscus reading, while permanently fused graduations provide clear visibility during routine volume estimation. The BORO 3.3 construction ensures resistance to acids, alkalis, organic solvents and hot liquids, maintaining stability during repeated heating or cleaning.
Interchangeable stopper Class B cylinders are widely used in school and university laboratories, industrial QC departments, environmental testing facilities, water analysis, food and beverage chemistry and general wet chemistry workflows. Their sealing capability makes them suitable for short term storage of measured liquids, preparing reagents, handling volatile materials and conducting basic analytical procedures. The stopper design also supports workflows requiring temporary protection from moisture, dust or contamination.
All interchangeable stopper Class B measuring cylinders supplied by LabChoice Australia undergo ISO 9001 aligned quality control inspection. This includes verification of ISO 4788 volumetric tolerances, stopper taper conformity checks, dimensional accuracy assessments, graduation legibility testing, thermal shock evaluation and chemical resistance testing performed in accordance with ASTM D543 principles where applicable. Cylinders are validated to ensure full compliance with ISO 3585 and ASTM E438 borosilicate glass performance standards, providing reliable, safe and long lasting volumetric equipment for routine laboratory use.