Helps satisfy HCS requirments by providing a simple format for communicating hazard determinations, offering a basic written hazard communication program, and simplifying the employee training and information process. Standardizes the presentation of chemical information. HMIS communicates 4 categories: Health, Flammability, Reactivity, and Protective Equipment. Reading an HMIS chart: The first 3 categories Health, Flammability, and Reactivity are measured by a number, 0-4. 4 = Very dangerous and 0 = No significant risk. The fourth category, Protective Equipment uses a letter system similar to that of the NFPA. A = safety glasses, B = safety glasses and gloves, C = safety glasses, gloves and an apron, D = face shield, gloves and an apron, E = safety glasses, gloves and a dust respirator, F = safety glasses, gloves, apron and a dust respirator, G = safety glasses, a vapor respirator, H = splash goggles, gloves, apron and a vapor respirator, I = safety glasses, gloves and a dust/vapor respirator, J = splash goggles, gloves, apron and a dust/vapor respirator, K = airline hood or mask, gloves, full suit and boots, and L — Z = custom PPE specified by employer