Vapor pressure called partial pressure. For example, air at sea level, and saturated with water vapor at 20 °C, has partial pressures of about 2.3 kPa of water, 78 kPa of nitrogen, 21 kPa of oxygen and 0.9 kPa of argon, totaling 102.2 kPa, making the basis for standard atmospheric pressure. Vapor pressure is measured in the standard units of pressure. The International System of Units (SI) recognizes pressure as a derived unit with the dimension of force per area and designates the pascal (Pa) as its standard unit. One pascal is one newton per square meter (N·m or kg·m·s). Experimental measurement
Jurisdiction under the Brussels I Regulation However, Article 5(1)c (2012 recast: Article 7(1)c) of the Regulation defines that if the conditions for Article 5(1)b (2012 recast: Article 7(1)b) are not fulfilled, the standard provision of Article 5(1)a is applicable again, making the national law for defining ‘the place for performance’, in the absence of a uniform concept, take over. Article 5(3) of the Regulation (2012 recast: Article 7(2)) gives the plaintiff, in matters relating to tort, delict or quasi-delict, the option to sue the defendant in the courts for the place where the ‘harmful event occurred or may occur’, in other words, the forum delicti commissi.