So you know all about cartridge color codes, and filter names and ratings. But do you know that all respirators have a lifespan?
Reusable respirator cartridges and filters need to be replaced. Problem is, you can’t always feel when the cartridge or filter is soiled and aren’t working to their maximum. Don’t rely on your nose to smell, or your mouth to taste the chemicals. It won’t always feel dangerous.
Cartridges don’t last forever and you need to be aware of when they need to be replaced. Here are fool-proof ways to make sure you are wearing the correct protection for the right amount of time.
Cartridge Shelf Life
Always check the cartridge packaging for an expiration date. This date refers to when the cartridge will no longer function if left in its original, unopened packaging. In general shelf life for cartridges are about 5 years, but do vary.
Three points here:
– Not all manufacturers include the expiration date on the packaging. You may need to refer to the date of manufacture instead.
– If the cartridge has been exposed to extreme temperatures, the expiration is invalid. The cartridge is no longer usable.
– The cartridge expiration date does not refer to how long the cartridge will last after beginning to use it.
Cartridge Usage Lifespan
To know when your cartridge will expire once opened, use one of the following three methods to estimate the cartridges’ lifespan.
Option #1: You can conduct this OSHA experimental test on your own. Follow the instructions, which are 4 steps, outlined on OSHA’S website.
Another perk of this test , aside from your safety of course, is that you can end up saving money since it’s a more accurate result of your cartridges’ lifespan.
Option #2: You could also use the manufacturer’s recommendation on your specific cartridge. The process for finding it is found here, on the OSHA website.
Keep in mind that manufacturers prediction will be accurate for only the particular brand you are using.
Option #3: There are 5 mathematical models that calculate the lifespan of your cartridge. The formulas include the contaminant concentration, the weight of carbon adsorbent, the breakthrough time and more. These calculators are the cheapest and easiest, however are limited to single containment situations. As such, it may not be the most accurate for your specific condition. Take a look at the math models, on OSHAs website.
Above all else, you can tell your respirator is in need of replacement when it becomes difficult to breathe comfortably, or the filter becomes dirty, or damage occurs. Always replace your cartridge when it is soiled.
While you’re at it, check out our collection of respirator cartridges on Gorvex.com.
Very well written!