Immerse the mask in the disenfecting solution. Soak and swirl...
Stop Breathing!!
stop breathing and close your eyes tightly
Perform a negative pressuce check.
Perform a negative pressure check
Perform a negative pressure check.
perfom a negative pressure check.
Perform a negative pressure check.
perform a negative pressure check
Perform a negative pressure check
stop breathing and clost your eyes tightly
perform negative pressure check