Lighting aLighting aBunsen BurnerBunsen Burner

PayPayAttention!

Attention!

Check the rubber hose for cracks and signs of deterioration. Replace the hose if necessary.

Connect the free end of the hose to the gas outlet on the laboratory bench.

Turn the vent until only about one-

third of the vent is open.

First practice making a spark, or light a

match and hold it near the top opening of the

burner.

THEN turn on the gas outlet valve and make a spark over

the burner

The gas mixture should ignite immediately.

If you are unable to ignite the gas, turn off

the gas outlet and allow the gas vapors to dissipate before trying

to ignite the burner again.

Fan the

Fan the area.area.

A hot flame will not have any orange. The

flame will appear bright blue with a darker inner

cone. The hottest region of

the flame is at the tip of this

dark inner cone.

This is a cool flame with an orange

combustion zone. In order to get a

hot flame you must open the air holes by turning the vent

of the burner.

When the air holes are half open, the blue cone becomes difficult to see

an example of a hot flame.

Remember the hottest part of the flame is

just above the inner cone.

Once you have a hot flame, you can adjust

the height with the control knob.

Don’t try to adjust using the gas valve on the desk, it will just go

out.

THANKS!

THANKS!Now Now

BE SAFE!

BE SAFE!