Machines, Tools, Equipment, Work Aids: Utilize various lab machines such as: Vollmer thickness tester, Instron tensile tester, Gretag-Macbeth densitometer, Ceast melt flow tester, etc. Work Conditions: Environmental Conditions: (Dust, fumes, heat, cold, noise, vibration, toxic conditions, work hazards, etc.) Controlled environment, noise from refrigeration equipment, etc.