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the situation. A respirator must be worn while inside the tank unless the tank is recleaned, <br /> vented for several minutes and retested, and atmospheric conditions meet the <br /> requirements in Table 2. <br /> 7.8.1.13.7. Unless you wear a respirator when handling resin containing styrene while <br /> working inside a tank, repeat the same toxic substance testing process using a different <br /> detector tube designed specifically for styrene vapors. Conduct testing when styrene <br /> concentrations are apt to be at their highest, such as during and after applying wet resin to <br /> larger surface areas. <br /> 7.8.1.13.8. Refer to Table 2 to determine when a respirator must be worn when using resin <br /> containing styrene. <br /> I <br /> 27 <br />