This document is a guide to making a portable device which can be used to monitor the air, in terms of PM2.5.

These tiny particles can come from a variety of sources and could be harmful. This device will indicate when the relative number of particulates in the air is high.  It could be used to monitor the air in a workshop.

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.

From time to time CLEAPSS receives enquiries from schools about recommendations, to meet health and safety standards, made following commercial health and safety inspections of design and technology facilities and equipment.

Schools are increasingly promoting an inclusive agenda. As a result, science and D&T departments may find students who use medical oxygen are following a normal school curriculum and are in their classes.