Ar y sleid nesaf cliciwch ar y blychau a meddyliwch am y risgiau sy’n gysylltiedig â Thitradu. Cliciwch eto i ystyried rhagofalon posibl ac eto i feddwl am beth y dylid ei wneud os ceir damwain.

Broken glass should always be cleared up carefully before proceeding to ensure that nobody cuts themselves.What to do if something goes wrong?The clamp should always be secure so that the burette does not slip

but if it is too tight, the burette might break.What can be done to minimize the risk?The burette could slip out of the clamp, smash and break, leaving sharp, broken glass that could cut you.Risk 1The burette is not

clamped securely.Hazard1

The acid and alkali are corrosive and

could splash.Hazard 2

The acid could spill when the burette is

being filled.Hazard 3

The fragile glass could break.Hazard 4

Bags and stools could cause you to trip.Hazard5

A Bunsen is used and there is hot

equipment when evaporating.

Hazard6

Acid and alkali should be washed off skin and clothing immediately.What to do if something goes wrong?Low concentrations of acid and alkali should be used. Eye protection should be worn at all times.What can be done to minimize the risk?It could go onto your skin or in your eyes and burn you.Risk 2

Acid and alkali should be washed off skin and clothing immediately.What to do if something goes wrong?A funnel should be used to fill the burette. The burette should be filled

at a sensible height (perhaps moved onto a stool). Eye protection should be worn at all times.

What can be done to minimize the risk?The spilt acid could burn your skin or your eyes.Risk 3Broken glass should be cleared up immediately before proceeding.

Minor cuts should be washed under the tap, checked for glass embedded and have a plaster placed on them.

What to do if something goes wrong?Take care when clamping the burette. When not using the pipette, place it in a safe place where it cannot roll off the bench.What can be done to minimize the risk?The sharp glass could cut you.Risk 4

The response to a fall will depend upon the severity. There may be physical damage from the fall, broken glass and / or spilt chemicals.What to do if something goes wrong?

Bags, stools and any other trip hazard should be put away. Some stools may be used to place stands on when filling burettes so care must be

taken.What can be done to minimize the risk?You could trip and hurt yourself or knock over the apparatus. (Not just

for this experiment)Risk 5

In the case of fire the gas supply should be turned off immediately and suitable fire fighting measures taken, (fire blanket, water / powder extinguisher used).

Burns should be held under a cold tap for 10 minutes and assessed for severity.What to do if something goes wrong?Bunsens should be lit and left on safety flames when not in use. A

heatproof mat should be used. Care should be taken with hot equipment and tripods should always be moved holding the feet.

What can be done to minimize the risk?There is a fire risk and risk of being burned.Risk 6