7210-Funnel, Long stem

• With 60° bowl angle for precise fitting of filter paper
• Manufactured from chemical and heat resistant pyrex borosilicate glass
• Stem length approximately 150mm

Here are some common uses of a funnel with a long stem:

1. Chemical Transfers: Funneling liquids from one container to another, especially in chemical laboratories, where controlled pouring is essential to prevent spills and ensure accuracy.
2. Laboratory Filtration: Long-stemmed funnels are often used in filtration setups where the liquid needs to pass through a filter paper or membrane. The long stem allows for the placement of the funnel in various apparatus configurations.
3. Separation Funnels: In chemistry, long-stemmed funnels are used in separation funnels for liquid-liquid extractions. The extended stem facilitates the separation of immiscible liquids.
4. Refilling Containers: Pouring liquids into containers with small openings or necks, where the long stem helps reach the bottom of the container without causing splashing or spills.
5. Precise Liquid Additions: For adding liquids dropwise or in small volumes, the long stem allows for precise control over the rate of addition.
6. Distillation Processes: Long-stemmed funnels are employed in distillation setups, especially when transferring liquids to and from distillation apparatus components.
7. Microscale Chemistry: In microscale chemistry experiments, where small amounts of reagents are used, long-stemmed funnels facilitate accurate and controlled liquid transfers.
8. Fluid Sampling: When sampling liquids from larger containers or vessels, long-stemmed funnels are used to reach specific depths while avoiding cross-contamination.
9. Solvent Additions: Adding solvents to reactions or solutions where the long stem allows for controlled and gradual pouring, avoiding sudden and potentially hazardous additions.
10. Liquids with Vapors: When handling volatile liquids that may produce vapors, the long stem helps direct the vapors away from the user, enhancing safety.
11. Layered Liquid Additions: In procedures where different liquids need to be added in layers, the long stem aids in carefully introducing each layer without disturbing the layers below.
12. Oil and Water Separation: Long-stemmed funnels are useful in experiments involving the separation of oil and water layers, allowing for controlled additions and separations.
13. Chemical Synthesis: Long-stemmed funnels play a role in chemical synthesis procedures, facilitating the addition of reagents with precision.
14. Liquid Dispensing in Education: Long-stemmed funnels are commonly used in educational laboratories to teach students about controlled pouring and liquid transfers.