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Suppliers and manufacturers provide these types of long-stem glass funnel to bulk buyers.
Besides, glass funnels are further classified by their main applications and technical characteristics.
As long stem glass funnel, the standard variety has a wide catchment area and a narrow stem intended for basic liquid transfer. Typically, this funnel suits most general tasks, such as filling containers with liquids, food ingredients, chemicals in laboratories, etc. This funnel style catches the fluid, enabling a swift and spill-free transfer into narrow-neck containers.
Incorporating a flat, porous disc and a vacuum inlet tube, a Buchner funnel is a funnel funnel with a long stem in the middle. It is mainly used for filtering mixtures under vacuum using suction filtration techniques. This funnel type is popular in chemistry laboratories and industrial settings that filter liquid through solid matter. The glass construction of the Buchner funnel also allows the investigation of chemicall resistant filter paper.
Some glass funnels come with internal measurement markings. Such funnels, with graduations, are effective in delivering precise liquid volumes. This feature is especially useful when working with liquids that need accurate measurement transfers, like pharmaceuticals and laboratory experiments. Such a stem funnel with gradations also checks the change in volume to reduce spillage as seen in conventional funnels.
Oil funnels are constructed with the automobile owner's convenience while adding or draining oil from the engine. They include a long stem for improved access to small apertures and a wider spout for quicker fluid transfers. Some models also have strainers suspended in the funnel's neck to eliminate impurities from the new oil.
A funnelette is a tiny funnel designed to deliver minute liquid amounts. It usually features a long and slightly tapered stem, making it ideal for precision works, such as adding reagent drops in chemical experimentation or filling small vials in a pharmaceutical.
Industrial and commercial buyers invest in long-stem glass funnels for some of these applications.
Long-stem glass funnels are indispensable tools in the chemical and laboratory industries. Analytical laboratories utilize them to transfer liquids and solutions quickly and safely into narrow-mouthed containers like test tubes, flasks, and bottles. Laboratory long-stem glass funnels also minimize spill and cross-contamination, crucial for maintaining high accuracy in lab operations.
Glass funnels with a long stem are also used in the pharmaceutical sector to transfer liquid drugs and other compounds. Larger funnels are useful in this sector to reduce filling times and improve the handling of materials with varying viscosities. Besides, glass funnels are suitable for pharmaceutical uses since they are chemically resistant and easy to disinfect.
Large volume long-stem glass funnels are commodities in chemicals and petrochemical niches. These funnels make glass funnels easy to handle and transfer large liquid quantities safely. The glass material also ensures compatibility with various chemical substances, while the long stem facilitates funneling into small openings, such as containers.
Long-stem glass funnels are additionally common in food and beverage production, especially when dealing with liquid ingredients like oils, syrups, and sauces. Quality control teams in food processing also use such funnels to transfer test samples without contamination. Thus, long-stem glass funnels help maintain cleanliness and compliance with food safety regulations.
The automotive industry frequently uses specially designed funnels, such as oil funnels, for pouring fluids like oil, coolant, and transmission fluid into engines or other parts. The long spout enables better placement in cramped engine compartments, limiting spillover and waste.
Materials
Manufacturers design long-stem glass funnels from either borosilicate or aluminosilicate glass, which withstand trigger changes and offer superb durability. Note that quality glass construction provides chemical resistance, making it suitable for use in laboratories, pharmaceuticals, and chemicals. For details, information, standard long-stem glass funnels measure 5 to 25 cm in diameter, approximately 10 cm up to 30 cm in stem length, and standard wall thickness of 1.5 mm.
Design
In general, long-stem glass funnels feature a conical or tapered shape that narrows towards the bottom open ending, allowing an easy and spill-free transfer of liquids into containers with small mouths. While the wide top accommodates large volumes, the long stem fits into narrow openings. Some funnels incorporate a filter paper holder or graduated markings in the stem of the funnel for precise measurements or filtration purposes.
Dimensions
Long-stem glass funnels come in various sizes to suit multiple applications. For example, the funnels with larger diameter openings are ideal for transferring viscous substances, whereas those with smaller openings work better with more fine liquids. Frequently, the diameter, length, and volume capabilities of the funnel vary considerably from 5 cm to 25 cm in diameter and 10 cm to 30 cm in length.
Filling narrow containers
Hold the funnel in place so it does not fall off when filling a container. When using filtration, ensure at least a little filtrate is in the funnel to avoid trapping air. Carefully pour the liquid into the funnel after confirming everything is in place.
Transfer small amounts of substance
A funnelette works best for these tiny quantities. It is crucial not to rush the transfer, as the funnel's stem can easily become blocked. After pouring the substance into the funnel, wait a few moments for it to flow through completely before removing it from the container.
Washing the funnel
Manually wash the funnel using a soft cloth and a mild detergent, and then thoroughly rinse it with distilled water. It is also alright to place the funnel in the dishwasher, but care should be taken to ensure it is securely fastened during the washing process. Moreover, allow the funnel to cool down to room temperature after exposure to heat or sudden temperature changes.
Regular Inspection
Check the glass funnel frequently for signs of cracks, chips, or scratches that may affect your glass funnel's functionality or compromise safety. Inspect the funnel for any visible damage or wear and tear, focusing on the stem, neck, and rim areas that endure regular handling. Also, examine the funnel when in use to allow for early detection of issues and replacement with new products.
Cleaning
It is paramount to maintain cleanliness in glass funnels to prevent contamination. In case of contamination, wash the funnel as soon as possible after use. Use warm water and a non-abrasive detergent to clean a glass funnel since abrasives may scratch the glass surface and damage it. When dealing with stubborn residues, soak the funnel in a solution of water and mild detergent to loosen any deposits before scrubbing. Don't forget to take extra care of the stem, as residues are most likely to be left there.
Storage
Store glass funnels safely in a secure cabinet or drawer away from direct sunlight and extreme temperatures. Sample storage baskets or racks also keep them in their respective places to prevent breakage. Therefore, such a storage option protects the glass funnels from dust and damage.)
Repairs
Along with routine inspections, identification of damage or breakage can be swift so that action can be taken. If the damage is minimal, such as small scratches or chips, consider using an appropriate glass repair adhesive to patch it up. In case of significant cracks structural integrity compromise or extensive breakage that is virtually impossible to repair, replacing the funnel with a new long-stem glass funnel is advised.
These are some of the quality and safety considerations for long-stem glass funnels. They are recommended for industrial buyers and chemists considering purchasing long-stem glass funnels.
Material Quality
Long-stem glass funnels come in different materials like borosilicate glass, which should be considered because of its resistance to thermal and chemical reactions. Besides, the quality of the glass directly affects the safety and functionality of the funnel, particularly in laboratories, chemical processing, and other industrial applications. Thus, in case a funnel is manufactured from inferior glass, it is more likely to shatter, crack, or leach contaminants.
Optical Clarity and Transparency
Optical clarity should be a priority because it allows users to see the substance being funneled and ensure accuracy during the transferring process. On the contrary, if the glass is not clear, users may find it hard to identify contaminants that may affect safety and mixture accuracy.
Smooth Edges and Finishing
This long-stem glass funnel comes with smooth edges to reduce break or cut occurrences during routine handling. Additionally, the funnel surface must be well finished to minimize the potential for residue accumulation, which can lead to contamination in critical environments.
Spill Prevention and Accuracy
Long-stem glass funnels usually have a tapered spout design that ensures accuracy when transferring liquids. Besides, they come in handy where the airflow is controlled, allowing for seamless pouring without spilling in a restricted area. In high-precision work areas, such as laboratories, minor spills can lead to significant safety hazards, and therefore, selecting a funnel with spill prevention and an accurate design is mandatory.
Handling Safety
A mineral long-stem glass funnel features a comfortable grip and high stability when placed in a labware or overflow cabinet. It also feels easy to grasp and transport the funnel, thus promoting safety in risky operations. Furthermore, placing the funnel securely decreases the likelihood of accidental spills caused by fumbling during transfers in slippery environments.
Thermal Resistance
Manufacturers make a long-stem glass funnel from thermal-resistant materials like borosilicate glass for high-temperature applications. Such a thermal resistance property is ideal for environments such as kitchens, chemical processing plants, and laboratories where rapid or extreme temperature changes are typical.
A1: Manufacturers use long-stem glass funnels in industries such as automobile for oil, coolant, and other fluid transfers. Chemists and quality control experts also use these funnels for quick and accurate chemical transfers in laboratories. Moreover, they have special funnels for filtering, measuring, and adding precise quantities of liquids in various fields.
A2: Most long-stem glass funnels are made of borosilicate glass. This is because borosilicate glass is less likely to break when exposed to extreme heat or low temperatures. Some funnels may use other types of glass that have similar qualities but to a lower extent. For this reason, they are suitable for many applications, including kitchens and laboratories.
A3: Long-stem glass funnels are best cleaned manually with warm water and a non-abrasive detergent. Using a dishwasher is also an option as long as the funnel is secured during the dishwashing process. Soaking a glass funnel in a solution of water and mild detergent is ideal for stubborn residues. Allow the funnel to cool gradually if exposed to heat before handling.
A4: While the funnel's diameter varies depending on its model, a funnel's stem length ranges between 10 cm and 30 cm. Also, a funnel's diameter varies depending on its model, but a funnel's stem length varies between 10 cm and 30 cm.
A5: To prevent breakage, store long-stem glass funnels securely in a cabinet or drawer, preferably between soft padding to prevent them from colliding with each other. Further, if the funnels are in a funnel stand or rack, secure them in place with a rubber band, neither too tight nor too loose. This prevents slippage or falling from a height, which may lead to breakage.
