MIRA Safety DETEHIT CWD-3 Detection Strips come in a sealed polyethylene tube and should be stored in their original packaging in a cool, dark and dry place at temperatures ranging from -40°C to +40°C (-40°F to +104°F). DETEHIT strips can be stored at temperatures up to 60°C, for up to one month. Use in subfreezing temperatures may require supplemental antifreeze liquid.

CWD-1/2 Detection Paper comes as a booklet in a polyethylene bag. It should be stored in its original packaging in a cool, dark, and dry place, at temperatures ranging from -40°C to +40°C ( -40°F to +104°F) for up to five years. CWD-1/2 paper can be stored at temperatures up to 60°C (140°F) for up to one month.

Filter use time depends on a few factors, including atmospheric conditions, contaminant type, concentration, along with your breathing rate. As a general rule of thumb, we would suggest having two filters per person per day for emergency evacuation purposes. If you'd like specific data on use time, you can look at the brochure that goes into breakthrough times along with the application.

Typically, it's never recommended to swap filters while you're in the thick of it. We are also selling escape filters, so the goal is for you to get out of the danger zone as fast as possible.

If you ever find yourself in a situation where you'll need to hot-swap filters while in the thick of it, you'll need to get proper training in order to execute the "Mask Clearing & Sealing" procedure safely. We suggest doing independent research on procedures of this level, as these are typically only taught in professional institutions.