Which NRTL was founded in 1864 to test the effectiveness of non-combustible insulation?

The Nationally Recognized Testing Laboratory (NRTL) that was founded in 1864 and focuses on testing products for safety and performance, including the effectiveness of non-combustible insulation, is Underwriters Laboratories (UL). UL has a long history of developing safety standards and testing protocols in various areas, including fire safety, and it plays a crucial role in ensuring that fire alarm systems and their components meet necessary safety requirements.

The establishment of UL in the mid-19th century indicates its pioneering position in the field of safety testing, particularly in regards to fire safety and the performance of materials in fire conditions. This historic background underlines the importance of UL in setting standards and testing for materials that can resist combustion, which is vital for ensuring the safety of buildings and reducing fire hazards.