meet the cold will condense into liquid and the measuring tube has condensation 30 divided by the line, read the volume of water in the measuring tube, from which computer the humidity contained in the product.Requirements for solvents:-Boiling point of the solvent in the temperatureboiling of water-Solvents are completely soluble in waterYou can use the following solvents: type + Mildness: 1110C + Benzene: 800C + Xylene: 1400C + CCl4:770C-The downside is mostly not full đượchoàn extraction of water in the sample.3.2.3.2. In progress-Accurate balance of 5-10 g of sample into the average bridge containing solvents (usually mildness). Rinse again with mildness for the Cup on the average. More mildness in about 100-150 ml.-Air took off, heat the average demand, strong evaporation boiling mildness gone with the water and condensed (adjusted for heat source 100 drops/minute) in measuring tube has broken into the starting line up. Continue to simmer until the water level in the tube measuring (water layer is located beneath the mildness), stop boiling. To cool, read volume (ml) of the measuring tube.
đang được dịch, vui lòng đợi..