Metered-dose inhaler stringent set of criteria, they must: In the early days of MDIs the most commonly used propellants were the chlorofluorocarbons CFC-11, CFC-12 and CFC-114. In 2008 the Food and Drug Administration announced that inhalers using chlorofluorocarbons as a propellant, such as Primatene Mist, could no longer be manufactured or sold as of 2012. This followed from the U.S. decision to agree to the 1987 Montreal Protocol on Substances that Deplete the Ozone Layer. Phospholipids are important natural surfactant lipids used in enhancing penetration and bioavailability. Phospholipids act by reducing the high surface tension forces at the air-water interface within the
1987–88 Montreal Canadiens season 1987–88 Montreal Canadiens season The 1987–88 Montreal Canadiens season was the team's 79th season. The club qualified for the playoffs, defeated the Hartford Whalers in the first round, but were eliminated in the Adams Division finals versus the Boston Bruins four games to one. "for more information visit" 1988 NHL Entry Draft Defensively, the Canadiens were the best team in the league, finishing the regular season with just 238 goals against. They also allowed the fewest power-play goals, with just 64 Hartford Whalers vs. Montreal Canadiens The Habs almost squandered a 3–0 series lead. The deep Habs roster was the