英语翻译LD50/LC50 values are commonly found on Material Safety Data Sheets (MSDS) for specific chemicals and products.You must review MSDS sheets and other reference materials before initiating work with all unfamiliar chemicals.You should also be familiar with the exposure limits (TLVs) for specific chemicals used in the work area.Toxic materials should be opened and handled only within a functioning ventilation enclosure,such as a laboratory hood,unless

英语翻译
LD50/LC50 values are commonly found on Material Safety Data Sheets (MSDS) for specific chemicals and products.You must review MSDS sheets and other reference materials before initiating work with all unfamiliar chemicals.You should also be familiar with the exposure limits (TLVs) for specific chemicals used in the work area.Toxic materials should be opened and handled only within a functioning ventilation enclosure,such as a laboratory hood,unless alternate work practices can achieve an equal or greater level of personal protection.