To confirm that the sanitizing water has an effective chlorine concentration.
What is FIT TEST? Fit test means to check the mask that you use for finding a correct mask.You may use the MT-05 for the FIT Test in quantitatively. What is FIT CHECK?Fit Check means to check the way of using daily the mask that you selected by the Fist Test, if the fitting way is correct.MT-05 is usable for the Fit Test in quantitatively.