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Description: The equation used to calculate the maximum acceptable concentration (MAC) for xylenes

The maximum acceptable concentration for xylenes is 0.09 milligrams per litre. This is calculated by multiplying 0.013 milligrams per kilogram body weight per day by 70 kilograms then by 0.2. This product is then divided by 2.14 litre equivalent per day and the result is rounded to 0.09 milligrams per litre.