Mask fit testing provides the employer with recorded data on the type and size of mask that best fits their employee. This information is essential to safe protection from harmful particulates they may be exposed to. Multi Test uses the best equipment available to ensure that your mask fits properly according to CSA's standard Z94.4. We use an OSHA approved, top of the line machine, the Portacount 8030 to conduct our tests. We Provide Quantitative as well as Qualitative Fit Testing.