Description
An Aspirator Bottle, also known as a solvent reservoir or gravity-feed bottle, is a specialized container used in laboratory and industrial settings for the storage, dispensing, and filtration of liquids. Unlike standard reagent bottles, these are equipped with a tubulation or a stopcock at the base to allow for the controlled discharge of liquids via gravity.
Key Product Features
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Tubulated Bottom: Features a built-in glass or plastic outlet near the base. This allows for the attachment of flexible tubing to transport liquids without tilting the bottle, minimizing the risk of spills or agitation.
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Borosilicate Glass Construction: Typically manufactured from 3.3 Borosilicate glass, providing excellent thermal shock resistance and high chemical durability against acids, alkalis, and organic solvents.
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Interchangeable Stoppers: Equipped with a ground-glass neck that accepts standard tapered stoppers (e.g., ST 24/29), ensuring an airtight seal for volatile or sensitive chemicals.
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Graduated Markings: Most models feature high-contrast, permanent white enamel graduations for easy volume estimation and inventory tracking.
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Heavy Wall Design: Reinforced wall thickness provides extra mechanical strength to handle the weight of large liquid volumes.
Technical Specifications
| Capacity | Approx. Height | Neck Size (ST) | Tubulation/Stopcock Type |
| 250ml – 500ml | 150mm – 180mm | 24/29 | Glass or PTFE Plug |
| 1000ml (1L) | 225mm | 29/32 | Glass or PTFE Plug |
| 2000ml (2L) | 260mm | 29/32 | Glass or PTFE Plug |
| 5000ml (5L) | 330mm | 45/40 | Heavy-Duty Stopcock |
| 10,000ml (10L) | 420mm | 45/40 | Heavy-Duty Stopcock |
Common Applications
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Gravity-Fed Dispensing: Used to deliver distilled water, buffers, or reagents to smaller containers or experimental setups.
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Mobile Phase Reservoirs: Often used in HPLC (High-Performance Liquid Chromatography) to store and supply solvents to the pump system.
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Filtration Systems: Serves as a collection vessel in vacuum filtration setups, where the bottom outlet allows for easy draining of the filtrate.
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Chemical Storage: Ideal for long-term storage of bulk chemicals that require a secure, non-reactive environment.
Safety & Maintenance
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Pressure Warning: While durable, glass aspirator bottles are primarily designed for gravity or low-pressure use. They should not be used in high-vacuum or high-pressure applications unless explicitly rated for such.
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Cleaning: The smooth glass surface is easy to autoclave or chemically sterilize. Ensure the stopcock is lubricated (if glass) or checked for leaks (if PTFE) regularly.
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Tubing Compatibility: Ensure the tubing attached to the bottom outlet is chemically compatible with the solvent being stored to prevent degradation or contamination.
Why Choose This Design?
The aspirator bottle is the standard for controlled liquid management. By placing the outlet at the bottom, you ensure that the most settled, homogenous liquid is dispensed first, and you eliminate the need to lift and pour heavy, potentially hazardous containers. It is a staple for any lab requiring organized, high-volume liquid handling.

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