Remember the color code for cartridges and filters is only a guide. Always read the label to be sure you have the right kinds of elements. If a combination of elements is required, be sure you have the right combination on each side of the respirator. If it is a full-face respirator, the face shield should be clear and in good condition. The first time you ever use a respirator, try it out in a nonhazardous atmosphere to get accustomed to how it feels.
Some respirators are bulky and heavy.
A full-face respirator, or one that covers your entire head, will affect your vision and hearing. Respirators that are not equipped with a speech transmission device or a microphone may reduce the clarity and loudness of your voice. Breathing is likely to require more effort than normal. If you are responsible for cleaning your own respirator, remove and clean filters, cartridges, valve assemblies and any other detachable parts. As you clean and dry each part of the respirator, inspect if carefully to be sure it is in good condition.