The test for mine use a saccharin spray (sweet taste). Random website with a fit test kit: https://www.allegrosafety.com/product/sweet-fit-test-kit/ https://ww

The test for mine use a saccharin spray (sweet taste). Random website with a fit test kit: https://www.allegrosafety.com/product/sweet-fit-test-kit/ https://www.allegrosafety.com/product/sweet-fit-test-kit/