The pain of the pimple went away, but the area around my mole is still slightly swollen is this normal? Dr. Gurmukh Singh Dr. Singh Need for check up: It is not feasible to provide a meaningful opinion without taking additional history, physical examination and may be some tests.
â¢ UL 2127 (Inert clean agents) â¢ UL 2166 (Halocarbon clean agents) â Class A test â¢ Wood crib â 6 minute preburn, 10 minute hold â¢ Non-cellulosic polymer sheets (next slides)
Halon ranks between dry chemical and carbon dioxide with respect to speed of fire control. The main disadvantage of halon is its environmental impact and cost. It is the most expensive of the extinguishing agents. Halon is also one of the chemicals connected with the depletion of the ozone layer.