Aspirator Bottle Glass

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A laboratory aspirator glass bottle, also known as a vacuum aspirator bottle or a vacuum filtration flask, is a specialized glass container used in scientific laboratories for various applications. It is designed to create a vacuum or negative pressure, which allows the filtration of liquids through a porous medium like a filter paper or a membrane.

The bottle typically has a conical or pear-shaped body with a sidearm or neck near the top. This neck is where a rubber or silicone stopper is inserted, allowing for the attachment of tubing or a hose to connect to a vacuum source or water aspirator. (Available in 2.5l,5l,10l,)

Laboratory aspirator glass bottles are commonly used in vacuum filtration processes to separate a solid precipitate from a liquid solution. When connected to a vacuum source, the air inside the bottle is removed, creating a pressure difference that draws the liquid through the filter, leaving the solid behind on the filter paper.

These bottles come in various sizes to accommodate different filtration needs and are an essential tool in many research, analytical, and quality control laboratories for tasks like separating particulate matter, sterilizing solutions, and performing various filtration techniques. They are often made of durable borosilicate glass to withstand the pressure changes and chemical interactions that may occur during laboratory operations.


Laboratory aspirator glass bottles have a wide range of major and common uses in scientific laboratories. Some of the most common applications include:

  1. Vacuum Filtration: As mentioned earlier, laboratory aspirator bottles are primarily used for vacuum filtration. They enable the separation of solid materials from liquid solutions by applying negative pressure through a vacuum source, pulling the liquid through a filter medium while leaving the solid behind.
  2. Sterilization: Aspirator bottles are also used for sterilization purposes. By applying a vacuum, liquids can be filtered through a membrane or filter paper, effectively removing microorganisms and particulate matter, leading to sterile filtrate.
  3. Liquid Transfer: Aspirator bottles are utilized to safely transfer liquids between containers. The vacuum generated helps in controlling the flow rate, preventing spills and minimizing the risk of exposure to hazardous materials.
  4. Solvent Removal: In certain laboratory processes, aspirator bottles are employed to remove solvents from samples. By applying a vacuum, the solvent can be evaporated more efficiently, leaving behind the desired substance.
  5. Reagent Preparation: Aspirator bottles are convenient vessels for preparing reagents and solutions. They allow scientists to mix, dilute, and filter various chemicals and compounds accurately.
  6. Cell Culture: In cell culture applications, aspirator bottles are employed to aspirate or remove culture media and other liquids from cell cultures without disturbing the cells.
  7. Waste Collection: Aspirator bottles are sometimes used as containers for collecting and holding liquid waste generated during experiments. The vacuum function facilitates the transfer and storage of waste materials safely.
  8. Vacuum Drying: In some cases, laboratory aspirator bottles are used in vacuum drying processes to remove moisture from samples or materials.
  9. Microbiology: In microbiology labs, aspirator bottles can be used to concentrate microbial samples by vacuum filtration, facilitating further analysis and study.