pcl
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catgirl15
Hazardous materials regulations require that all substances be labelled with a diamond-shaped sticker indicating the types of risks that the substance poses. Each diamond is given a rating of 0-3, with 0 being non-hazardous, and 3 being the most hazardous.The blue diamond is for health, red is for flammability, yellow is for reactivity, and white is for PPE (personal protective equipment).
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