Observe for any color change. Objectives of Barfoeds Test. Chemistry Lab Glassware Science Kitchen Chic Branding Display Beakers Test Tube Laboratory Flasks Barfoeds Test Definition. . However sucrose also gives this test positive as it undergoes hydrolysis in the presence of an acid. An end-to-end online Marketplace for Central and State Government Ministries Departments Central State Public Sector Undertakings Autonomous institutions and Local bodies for procurement of common use goods services. Add 1-2 ml of Biuret reagent to all the test tubes. To detect reducing carbohydrates. In chemistry a reducing agent also known as a reductant reducer or electron donor is a chemical species that donates an electron to an electron recipient called the oxidizing agent oxidant oxidizer or electron acceptorExamples of substances that are commonly reducing agents include the Earth metals formic acid oxalic acid and sulfite compounds.