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Bunsen Burner With Stop Cock
Bunsen Burner With Stop Cock
Bunsen Burner With Stop Cock
Bunsen Burner With Stop Cock

Bunsen Burner With Stop Cock

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Bunsen Burner With Stop Cock

Bunsen Burner With Stop Cock

Original price was: KSh 1,500.00.Current price is: KSh 1,260.00.

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Original price was: KSh 1,500.00.Current price is: KSh 1,260.00.

  1. Base
  2. Gas Inlet
  3. Barrel:  5 to 13 cm in height.
  4. Collar
  5. Air Holes (Air Intake Valve)
  6. Stopcock
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Description

Bunsen Burner With Stop Cock

A Bunsen burner with a stopcock is a variation of the standard Bunsen burner, designed to offer more precise control over the gas flow directly from the burner itself. The stopcock functions as an integrated valve that can be adjusted to regulate the gas supply, enhancing safety and ease of use. Here are the full details:

Components and Structure

  1. Base: A sturdy and heavy base that provides stability to the burner.
  2. Gas Inlet: A connector where the gas source, usually methane or natural gas, is attached via rubber tubing.
  3. Barrel: A vertical metal tube where gas and air mix. The barrel is typically about 5 to 13 cm in height.
  4. Collar: An adjustable ring around the barrel with air holes. The collar can be rotated to control the amount of air mixed with the gas.
  5. Air Holes (Air Intake Valve): Openings at the base of the barrel, just above the gas inlet, allowing air to enter and mix with the gas.
  6. Stopcock: An integrated valve on the burner itself, usually located near the base, which allows precise control over the gas flow.
  7. Flame: The result of the gas-air mixture being ignited at the top of the barrel.

Operation

  1. Connecting to Gas Supply: Attach the rubber tubing from the gas source to the gas inlet of the Bunsen burner.
  2. Adjusting the Stopcock: Ensure the stopcock is initially closed.
  3. Lighting the Burner:
    • Rotate the collar to close the air holes, limiting air flow.
    • Open the main gas supply slightly.
    • Gradually open the stopcock to allow gas to flow into the barrel.
    • Use a spark lighter or match to ignite the gas at the top of the barrel.
    • Once ignited, adjust the stopcock to control the gas flow and the collar to achieve the desired flame.

Types of Flames

  1. Yellow Safety Flame (Luminous Flame):
    • Produced when the air holes are mostly closed.
    • Incomplete combustion, resulting in a cooler, yellow, and sooty flame.
    • Temperatures around 300°C.
    • Not ideal for heating as it leaves residues.
  2. Blue Flame (Non-Luminous Flame):
    • Produced when the air holes are open, allowing more air to mix with the gas.
    • Complete combustion, producing a hotter and more efficient flame.
    • Temperatures up to 1500°C.
    • Consists of an inner blue cone and an outer, almost invisible cone. The tip of the inner blue cone is the hottest part.

Safety Considerations

  1. Proper Ventilation: Ensure the area is well-ventilated to prevent the accumulation of gas.
  2. Leak Checks: Regularly inspect the tubing and connections for gas leaks.
  3. Use a Spark Lighter: To ignite the burner, use a spark lighter to avoid burns from matches.
  4. Adjust the Flame Properly: Ensure the correct flame type is used for the specific task.
  5. Turn Off When Not in Use: Always close the stopcock and turn off the main gas supply immediately after use.

Applications

  1. Sterilization: Used in microbiology labs for sterilizing equipment.
  2. Heating: Ideal for heating chemical substances during experiments.
  3. Combustion Reactions: Suitable for various combustion experiments.
  4. Melting and Boiling: Used to melt solids and boil liquids due to its high-temperature flame.

Maintenance

  1. Regular Cleaning: Keep the burner clean to prevent blockages in the gas inlet, air holes, and stopcock.
  2. Inspection: Regularly check for wear and tear, and replace any damaged parts.
  3. Lubricate the Stopcock: Ensure the stopcock operates smoothly by occasionally applying a suitable lubricant, if recommended by the manufacturer.

Advantages of a Bunsen Burner with Stopcock

  1. Precision: Allows for fine-tuned control over the gas flow directly at the burner.
  2. Safety: Provides an additional safety measure by allowing quick shut-off of the gas flow at the burner.
  3. Convenience: Easier to adjust the flame during experiments without needing to access the main gas supply valve.

By understanding the components, operation, safety measures, and applications of a Bunsen burner with a stopcock, users can effectively and safely utilize this advanced laboratory tool.

 

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