| 摘要 |
PURPOSE: A speed adjustable buret is provided to adjust the dropping amount of a solution according to the degree of pressurization of a Teflon tube by forming an adjusting device pressurizing the Teflon tube by a pressure. CONSTITUTION: The buret is blocked at its hole according to the degree of turning a cock to adjust a solution. A connection tube(4) formed integral with a tube body(22) used as a soft Teflon tube is coupled to the lower end of a buret body(2). An adjusting device(20) which pressurizes the Teflon tube by a pressure while spherically moving, is formed on the tube body(22). The dropping amount of a solution is adjustable according to the degree of pressurization of the tube body(22).
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