The best devices used for safety (fire-detection of leaks) in the laboratory of all chemicals and gases usage are as follow:
.Fire Extinguishers ( Carbon Dioxide, ABC dry chemical, ABC dry powder, .Powder Fire Extinguisher ) .Fire Alarm Call .Hydrogen Sulfide and Ammonia gas detector in fume hood. .Chemical Spill pillow ( Absorbent) .Emergency showers .Emergency eyewashes .First aid kits .Smoke detector .Speaker