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For ingestion the maximum permissible intake is 7 picograms.
The Occupational Safety and Health Administration (OSHA) has established a maximum permissible exposure level of 50 parts per million (ppm) over eight hours.
The permissible exposure level of lead is 50ug/m3.
50 db
The amount of Phosphate in water is not regulated, but the WHO (World Health Organisation), has provided a maximum 'safe' level of around 5mg per litre, and the RDA (Recommended Daily Allowance) should not exceed 800mg.
90dbA for 8 hours of working.
45 Is currently the maximum level for PVM, They are hoping to raise the max level in the future.
The electrons on the outermost level are called Valence electrons. the usual maximum is 8.
Maximum of 2n2, where n is the energy level.
No. Maximum is level 100
What is the maximum sound level is safe for human ear