Rapid Routine Calculation of Multicomponent Mixtures with Punched Card Machines

Abstract

science Publishers, 1948Publishers, . 272 (1943.used for several years in the authors' laboratory with very satisfactory results in the following special applications:Determination of water in stocks of high vapor pressure such as propane and the butanes.Determination of water in colored stocks such as lubricating oils, transformer oils, etc., in which the color bodies are not solubla in the glycol.Studies of the water solubility-temperature relationship for hydrocarbons over the temperature range 60" to 180" F. There seems no reason to doubt that the upper temperature may not be further increased. SUMMARY-4 modified Karl Fischer method for determining the water content of hydrocarbons and petroleum fractions involves ex-

Automatic Operations in Analytical Chemistry

“…(The manufacturer makes no recommendations of what to do with a possible total of 2000 cards obtained per work-week.) The use of punched card machines for rapid routine calculation of multicomponent mixtures from infrared data has been reviewed by Opler (356). The 3 minutes required for calculation of a ten-component mixture represent a substantial saving over the 15 or 11 minutes required by a desk calculator or analog computer, respectively.…”