Explains laser classification and hazards. Describes the  lasers that are permitted in school and the range of relevant practical work. Also desribes common devices which use lasers and how they might be used in school. Finally, describes the classification and uses of modern, bright LEDs.

Describes the hazard labelling to be introduced by 2015 for all chemicals, as a consequence of the Global Harmonised System for such labelling. Explains what the new labels will look like, and what information they will include.

Using laser spirit levels to determine whether walls and other surfaces are truly horizontal or vertical.

The solvents are usually highly flammable (hydrocarbons, esters or ketones) but are sometimes non-flammable chlorinated hydrocarbons. This risk assessment also covers paint strippers that use similar solvents.