**Soybean Biodiesel and Metrology**

Vanderléa de Souza, Marcos Paulo Vicentim, Lenise V. Gonçalves, Maurício Guimarães da Fonseca and Viviane Fernandes da Silva *INMETRO- National Institute of Metrology, Standardization and Industrial Quality; Directorate of Industrial and Scientific Metrology; Division of Chemical Metrology Brazil* 
