Since long, St. John's wort has been recognized by people for the health benefits possessed by the herb. For instance, it possesses wonderful anti-viral as well as antiseptic characteristics and is also effective when used as an analgesic.
Occupational Exposure Limits (. s) restrict the amount and length of time a worker is exposed to airborne concentrations of hazardous biological or chemical agents.here are. s for over 725 substances under R.R.O. 1990, Regulation 833 (Control of Exposure to Biological or Chemical Agents) and Ontario Regulation 490/09 (Designated Substances) under Ontarioâs Occupational Health and Safety Act.
The annual occupational dose equivalent limit for the lens of the eye, a particularly radiosensitive organ, is 150 mSv (15 rem or 15,000 mrem). The annual occupational dose equivalent limit for the skin and extremities is 500 mSv (50 rem or 50,000 mrem).ccording to the NCRP. the annual occupational whole-body dose equivalent limit is 50 mSv (5 rem or 5000 mrem). The annual occupational whole-body dose equivalent limit for students under the age of 18 years is 1 mSv (100 mrem or 0.1 rem).