Respirators are normally used in three different types of normally hazardous operations, conducting investigations and corrections; and in emergencies It covers the following points: * The principles which explain the reasons how and why Respirators perform * The different types of Respirators * The factors governing the use of Respirators * Different variations of air purifying types of Respirators * The problems associated with wearing Respirators * The fitting of Respirators * A summary of Do's and Don'ts and danger signals Looks at various hazardous gases and chemicals and the correct respirator to use in each situation. Also shows how to maintain respirators so that they remain in good working condition. Designed to be shown to all people who wear or may need to wear respirators. 17 minutes.