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| Special disposal procedures need to be followed. |
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| Organisms or other biological materials that might be harmful to humans. |
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| Objects that can burn skin by being too cold or too hot. |
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| Use of tools or glassware that can easily puncture or slice skin. |
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Definition
| Possible danger to respiratpory tract from fumes. |
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| Possible danger from eletrical shock or burn. |
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| Substances that can irritate the skin or mucous membranes of the respitory tract. |
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| Chemicals that can react with and destroy tissue and other materials. |
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Definition
| Substance may be poisonous if touched, inhaled, or swallowed. |
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Definition
| Open flame may ignite flammable chemicals, loose clothing, or hair. |
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Definition
| Open flame in use, may cause fire. |
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| Proper eye protection must be worn at all times by anyone performing or observing science activities. |
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Definition
| This symbol appears when substances could stain or burn clothing. |
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Definition
| This symbol appears when safety of animals and students must be ensured. |
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| This symbol appears when radioactive materials are used. |
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Definition
| After the lab, wash hands with soap and water before removing goggles. |
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