only be utilised on half mask respirators offering a degree of particulate protection i.e. FFP2 / FFP3 / P3 … it can be used on either reusable or disposable devices BUT SHOULD NOT BE USED on full face RPE:

• Relies on the wearer's sense of smell and taste to determine if the mask is correctly fitted
• Involves the wearer donning a mask and an aerosol is sprayed around their face
• A series of exercises are then performed, these are designed to asses the fit.
• If the wearer can detect the smell or taste of the aerosol, the mask does not fit correctly, and adjustments must be made.
• Typically used for half-mask respirators

is required for all close-fitting full-face respirators and can also be used on half face RPE (disposable or reusable). A qualitative test can only be utilised on half mask respirators offering particulate protection i.e. FFP3:

• Uses a machine to measure the amount of leakage around the mask's seal
• More precise than qualitative testing
• Measures the mask's fit factor or the number of particles that leak into the mask during use
• Used for full-face respirators and other types of RPE that require a higher level of protection.