Borosilicate Glass Kitasato Flask with Ground Glass Joint for Vacuum Filtration

Kitasato flask manufactured from borosilicate glass with a standard ground glass joint and side tubulation for vacuum. Designed for reduced-pressure filtration assemblies using Büchner funnels or sintered disc funnels.

Specifications

• Material: Borosilicate glass
• Joint: Standard ground glass — airtight seal for vacuum service
• Tubulation: Side arm for direct connection to vacuum pump or water aspirator
• Construction: Reinforced walls to withstand continuous vacuum without deformation

Typical Applications

Vacuum filtration with Büchner funnel for solid-liquid separation in organic synthesis. Also used as a receiver flask in reduced-pressure distillations or as an auxiliary vessel in vacuum line assemblies.

Standard in organic chemistry, pharmaceutical, analytical and quality control laboratories where rapid filtration is routine.

Why a Ground Glass Joint

The ground joint couples directly to sintered disc funnels of the same cone size—no rubber adapters that deteriorate or lose their seal over time. Holds continuous vacuum without leakage.

Chemical Resistance

Borosilicate glass withstands dilute acids, moderate bases and the majority of organic solvents common in synthesis. Compatible with laboratory detergent cleaning and autoclave sterilisation.