Buchi Rotavapor Evaporating Flask, BORO 3.3
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Buchi Rotavapor Evaporating Flask supplied by LabChoice Australia is designed for reliable, efficient solvent removal on rotary evaporators across teaching, analytical and industrial laboratories. Engineered for smooth rotation under vacuum, these evaporating flasks support rapid concentration, solvent exchange and recovery workflows in organic synthesis, natural products, pharmaceutical and environmental sample preparation. The round body geometry promotes uniform film formation during rotation, increasing surface area for faster evaporation while reducing bumping risk when operated with correct vacuum control and bath temperature.
Manufactured from premium BORO 3.3 borosilicate glass that complies with ISO 3585 and ASTM E438 Type 1 Class A standards, these flasks deliver outstanding chemical resistance and thermal stability during repeated heating and cooling cycles. Uniform wall thickness and high clarity glass support consistent performance under vacuum, enabling clear visual monitoring of solvent behaviour, foaming and residue formation. The robust construction is well suited to routine laboratory operation where flasks are repeatedly mounted, removed, washed and reused.
Each Buchi Rotavapor evaporating flask features a precision ground joint or compatible coupling designed for secure, leak resistant attachment to rotary evaporator vapour ducts and adapters. Where ground glass joints are supplied, taper geometry is manufactured in accordance with ISO 383 and ASTM E676 dimensional standards for interchangeable glassware, supporting dependable compatibility with standard jointed rotavap assemblies, joint clips and sealing components. Accurate joint fit is critical for maintaining stable vacuum, improving evaporation efficiency and minimising solvent loss.
Buchi Rotavapor evaporating flasks are widely used for concentrating reaction mixtures, removing high volume solvents, reclaiming volatile solvents, preparing extracts, fraction concentration and sample clean up prior to chromatography or instrumental analysis. Their design supports controlled evaporation with reduced thermal load on heat sensitive compounds, making them essential for laboratories handling valuable or temperature sensitive samples.
All Buchi Rotavapor evaporating flasks supplied by LabChoice Australia undergo ISO 9001 aligned quality control inspection. This includes joint taper accuracy verification, dimensional conformity checks, wall thickness assessment, annealing and stress control review, visual inspection for inclusions or surface defects, and functional fit testing to ensure secure mounting and stable vacuum operation. Each flask is validated to support compliance with ISO 3585 and ASTM E438 borosilicate glass expectations, along with ISO 383 or ASTM E676 joint interchangeability standards where applicable, delivering long term reliability for high throughput rotary evaporation.