Cleveland open-cup method
- Cleveland open-cup method
-
The Cleveland open-cup method is one of three main methods in chemistry for determining the flash point of a petroleum product using a Cleveland open-cup apparatus, also know as a Cleveland open-cup tester. First, the test cup of the apparatus (usually brass) is filled to a certain level with a portion of the product. Then, the temperature of this chemical is increased rapidly and then at a slow, constant rate as it approaches the theoretical flash point. The increase in temperature will cause the chemical to begin to produce flammable vapor in increasing quantities and density. The lowest temperature at which a small test flame passing over the surface of the liquid causes the vapor to ignite is considered the chemical's flash point. This apparatus may also be used to determine the chemical's fire point which is considered to have been reached when the application of the test flame produces at least five continuous seconds of ignition.[1]
The other principal methods of establishing chemical flash points are the Pensky–Martens closed-cup test and the Tagliabue cup method (often called simply the "Tag method").
References
- ^ Manual on flash point standards and their use: methods and regulations. Baltimore, MD: ASTM International. September 1992. ISBN 0803114109.
Wikimedia Foundation.
2010.
Look at other dictionaries:
Flash point — The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture in air. At this temperature the vapor may cease to burn when the source of ignition is removed. A slightly higher temperature, the fire… … Wikipedia
Ten-pin bowling — is a competitive sport in which a player (the “bowler”) rolls a bowling ball down a wooden or synthetic (polyurethane) lane with the objective of scoring points by knocking down as many pins as possible. The convert|41.5|in|cm|0|lk=on|sing=on… … Wikipedia
October 2005 in sports — See also: 2005 in sports, October 2005 < October 2005 > S M T W T F S … Wikipedia
CenturyLink Field — WaMu Theater redirects here. For the theater in New York City formerly sponsored by Washington Mutual, see Madison Square Garden. CenturyLink Field … Wikipedia
March 2009 in sports — Worldwide current events | Sports events … Wikipedia
performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical. The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains … Universalium
March 2007 in sports — See also: 2007 in sports << March 2007 >> S M T W T F S … Wikipedia
November 2008 in sports — Worldwide current events | Sports events … Wikipedia
baseball — /bays bawl /, n. 1. a game of ball between two nine player teams played usually for nine innings on a field that has as a focal point a diamond shaped infield with a home plate and three other bases, 90 ft. (27 m) apart, forming a circuit that… … Universalium
January 2005 in sports — NOTOC 2005 in sports : ← January February March April May June July August September October November December → Events in sports31 January 2005*Cricket: Bangladesh (202 for 2) beat Zimbabwe (198) by eight wickets in the fifth One Day… … Wikipedia
