NSF P181-4: Residential Portable Electrical Spas
The word “spa” is thought to originate from the Belgian village of Spa. During Roman times, the village became well-known for its warm mineral springs,…
ASME A112.19.17-2010 (R2023): Safety Vacuum Release Systems
The largest pool in the world is in Algarroba, Chile. It holds 66 million gallons of water, stretching 1,013 meters (over 3323.491 feet) long and…
IEC 60335-2-53 Ed. 4.1 b:2017—Sauna & Infrared Cabins
Sweating has long been used as a therapy and traditional medicine. The Mayans used sweat houses 3,000 years ago. In Finland, saunas have been used for thousands…