Diesel freezing point simple identification method

Agricultural diesel power machinery, generally light diesel oil. According to the solidification point is generally divided into: 0 number, -10, -20, -35 diesel, the condensation point is not higher than 0 °C, -10 °C, -20 °C, -35 °C. The larger the grade, the lower the freezing point. The method for checking the freezing point is to take a large-sized thermos flask, which contains salt and ice, and mix it evenly. A large-diameter glass test tube is fixed on the stopper, a small glass test tube is placed in the large test tube, and the oil sample is placed in a small test tube. A thermometer with a measuring range of -40 to +50°C is inserted through the hard and soft cork. The mercury ball of the thermometer is 8 to 10 mm from the bottom of the tube. When the test oil temperature drops to 3 to 5°C before the estimated freezing point, take out the test tube and tilt it slightly. If the oil surface still flows, it is still put into the tube and continue to cool. For each drop of 1°C, remove the sample and observe once. If the surface does not flow, lay it sideways for 3 seconds. If the oil surface is still not moving, it will be the freezing point. During the test, the glass tubes filled with oil must be clean and dry, and corks should be assembled between the large and small tubes. The mechanism of the entire method is to mix ice and salt to create a small environment where the temperature keeps dropping, cool the oil sample, and observe its freezing point.

Other Food Ingredients

Food Ingredients,Food Additives Ingredients,Natural Sweetener Food Ingredients,Nutritional Food Ingredients

Nanjing Sunshine Biotech Co., Ltd , http://www.sunshine-bio.com