No safety is necessary everywhere...the streets, your home, car driving.... elaborate on the question
A product with the UL logo has been safety tested by Underwriters Laboratories, a highly respected tester and safety certifier.
Laws are necessary because some people are thoughtless or greedy and do only what they want without thinking of the health and safety of others.
because of safety
Underwriters Laboratories (UL) and other recognized testing laboratories do not approve products; instead, they test products to ensure they meet specific safety standards. If a product passes the testing, it may receive a certification mark from the testing laboratory indicating it meets those standards. Manufacturers often seek testing from these laboratories to demonstrate their product's compliance with safety regulations.
Safety glasses are used in laboratories to protect operators eyes from splashing of dangerous liquids, powders, etc.
No.
That would be the Underwriters Laboratories, or UL.
The Underwrites Laboratories is a company that deals with product safety testing and certification. You will find the UL symbol on any product that has been tested by this company. The United States head office for Underwriters Laboratories is located in Northbrook, Illinois.
The safety symbols used in a laboratory would depend on what kind of lab it is and what activities are pursued in the lab. There is no universal set of safety symbols suitable for all laboratories.
Only in nuclear physics laboratories.
Not necessarily ... It depends on the product and the safety standards involved. UL approved simply means that the testing agencies Underwriters Laboratories (UL) or Underwriters Laboratories Canada (ULC) tested the product against safety standards. Underwriters Laboratories tests all sorts of products for all sorts of safety hazards. Presumably, if fire is a safety concern for the specific product tested, the approval would mean that the product met some sort of fire resistance standards.
To protect you.