Resources and Researches Useful Tools/Information Occupational Hygiene Chemical Permissible Exposure Levels of Toxic Substances (Singapore) Medical Examination Schedule (Singapore) NIOSH Analytical Methods Chemical Sampling/Analytical Methods Fit Test Timer (QLFT) Noise Permissible Noise Limit (Singapore) Noise Calculations Ergonomics Rapid Upper Limb Assessment Rapid Entire Body Assessment MAC – Lifting operations assessment UK HSE Manual Handling Assessment Chart (MAC) Tool UK HSE Assessment of Pushing and Pulling (RAPP) Tool UK HSE Assessment of Repetitive Tasks (ART) Tool