• Colourless transparent gas
• Rotten egg smell at low concentrations
• Paralysis of smell at higher concentrations
• Is heavier than air and will collect in low places
• Highly toxic, poisonous and flammable
• Is easily dispersed by the wind

H₂S safety reminders

• Never rely on your sense of smell
• Familiarize yourself with the location and use of detection and protection equipment
• Use detection and protective equipment when entering areas where there is a risk of H₂S
• Always use breathing equipment where there is an H₂S concentration above what the national legislation allows
• Always be aware of the wind direction
• Never work alone in an H₂S area (buddy system)
• Always don full breathing equipment before attempting a rescue in an H₂S area
• Familiarize yourself with the H₂S alarm in accordance with the alarm plan