GHS Pictograms: Not a Random Process
Mar 03, 2015
Pictograms are a required feature of the new GHS standardized SDS that could arguably be its most effective aspect. One look at a GHS pictogram could determine the potential short/long term health effects a chemical can have on an individual, up to and including such effects as death. As such the ability for pictograms to reach "everyone" is imperative. How do GHS pictograms do that? Let's explore.
Simply put, GHS pictograms make hazardous warnings more visible. As simple as they may appear, pictograms do have a strict standard to live up to. According to the International Organization for Standardization (ISO) 9186 (Public Information Signs) the result of testing a pictogram, using a response method, must be above a 67% and in the United States 85%. The conclusions of the pictogram tests are based off of the following response categories:
- Correct understanding of the symbol is certain
- Correct understanding of the symbol is likely
- The meaning conveyed is the opposite of that intended
- Incorrect response given
- No response given
When designing a pictogram cognitive ergonomists always take into consideration the background of an individual, especially those working in potentially hazardous environments. According to ISO a pictogram must not require any learning by the public to interpret information and it must be able to encourage a cautious reaction. This may not be an easy task, especially when there are many languages and varying cognitive abilities within one work place. In addition to crossing those boundaries let's not forget seasoned employees who may have developed a routine with hazard materials over time that can distort current perceptions of danger in the workplace. The good news is that GHS pictograms have the ability to address all of the above.
The descriptive pictures found within a pictogram's boundaries allow its warnings to transcend linguistic, cognitive, and conditioned boundaries by appealing to an individual's innate reaction to danger. In essence, the more dangerous a symbol the more cautious a person becomes. Who would have thought something so seemingly elementary would take this much consideration?!
Kudos to the new GHS for standardizing pictograms!
For more information on safety training or what trainings HazCommpliance can offer your organization please email us at
Helpful Links
- Globally Harmonized System The Globally Harmonized System of Classification and Labelling of Chemicals (GHS) is a system for standardizing and harmonizing the classification and labelling of chemicals.
- Hazcomm Standard An update to the Hazard Communication Standard (HCS) which provides a common and coherent approach to classifying chemicals and communicating hazard information on labels and safety data sheets.
- Mass.Gov Right-To-Know Establishes minimum standards and reasonable requirements to protect the health and safety of employees through the communication of information regarding toxix or hazardous substances.
- Occupational Safety & Health Administration (OSHA) Congress created the Occupational Safety and Health Administration (OSHA)* to assure safe and healthful working conditions for working men and women by setting and enforcing standards and by providing training, outreach, education and assistance