Please help with translation and correction

2012-04-16View Original

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I’m not sure how to translate the following sentence; please help: The Occupational Safety and Health Administration (OSHA) limits hydrogen sulfide exposure to 20 ppm (ceiling) and 50 ppm (peak, not to exceed 10 minutes). The U.S. Occupational Safety and Health Administration (OSHA) sets the allowable concentration of hydrogen sulfide at 20 ppm (maximum limit) and 50 ppm (maximum value, ? The maximum duration is no more than ten minutes).

Reply #22012-04-16

The U.S. Occupational Safety and Health Administration (OSHA) limits the exposure to hydrogen sulfide at 20 ppm (maximum limit) and 50 ppm (short-term peak, for a maximum duration of ten minutes).

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Please help with translation and correction

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