N Determination in Engine Oil According to the Kjeldahl Method

6 Jun 2017

Oil additives are used to improve the base oil into a high performing lubricant. By utilizing the same base stock, many different oils can be manufactured, each with its own unique properties, by adding different additive packages. Combined nitrogen additives in petrochemical fuels give origin by combustion to nitrogen oxides whose emission in the atmosphere is subjected to limitations. This application note presents the nitrogen determination in engine oil according to the Kjeldahl method.

UDK Series - Kjeldahl Distillation Units

Velp Scientifica

The UDK Series Distillers are designed to meet the most challenging demands and requirements for diverse applications, according to international standards: Kjeldahl nitrogen TKN, proteins, ammoniacal nitrogen, nitric nitrogen (Devarda), phenols, TVBN and volatile acids, cyanides, and alcohol content. 

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DKL Series and DK Series - Kjeldahl Digesters

Velp Scientifica

DK Series digesters are traditional digesters, consisting of an aluminum heating block to offer high thermal homogeneity. The DKL Series of digesters offers a premium level of automation: lowering and lifting of the samples take place automatically, as well as the separation between the test tubes and the suction cup. VELP digesters work in accordance with a variety of Standards (such as AOAC, ISO, EPA, DIN etc.)

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KjeldahlKjeldahl is an analytical chemistry technique for the quantitation of nitrogen in chemical substances. Applications of Kjeldahl include analyzing the protein content of food, nitrogen analysis in environmental sciences and the pharmaceutical industry and total kjeldahl nitrogen, nitrate and ammonia analyses in agricultural sciences.NitrogenOil and Grease