| Standard Operating Procedures |
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Work practices, personal protective equipment or protective devices as well as engineering controls which are employed to minimize contact with a hazardous material. The selection of the most effective set depends as much on the conditions of use of the material and the physical environment, as it does on the innate toxicological properties of the chemical. Unattended Laboratory Operation: A laboratory procedure or operation during which there is no person present who is knowledgeable regarding the operation and emergency shutdown procedures. Unknown Toxic Properties: A term describing a chemical for which there is no known statistically significant study conducted in accordance with established scientific principles that establish its toxicity. |