Table 3. Details of reasons for failing the follow-up survey test in the last five years.
| RPE category | Failure reason | |
|---|---|---|
| 2018 | Dust mask | ·Insufficient tensile strength of the strap |
| ·Missing of the pass certificate ravel | ||
| Gas mask | ·Failing to meet the exhaust resistance criteria | |
| ·Failing to meet the intake resistance criteria | ||
| ·Failing to meet the air tightness criteria | ||
| 2017 | Dust mask | ·Failing to meet the capture efficiency criteria |
| ·Incorrect description of the manual and/or attached documents | ||
| PAPR | ·Incorrect description of the manual and/or attached documents | |
| 2016 | Dust mask | ·Incorrect description of the manual and/or attached documents |
| PAPR | ·Incorrect description of the manual and/or attached documents | |
| 2015 | Dust mask | ·Insufficient tensile strength of the strap |
| ·Missing of the manual | ||
| Gas mask | ·Insufficient decontamination performance of the canister | |
| 2014 | Dust mask | ·Insufficient tensile strength of the strap |
| ·Failing to meet the air tightness criteria | ||
| Gas mask | ·Incorrect description of the manual and/or attached documents | |
RPE: respiratory protective equipment; PAPR: powered air-purifying respirators.