一、概述1.测量依据JJG196-2006《常用玻璃量器检定规程》。2.测量原理对于本次检定采用衡量法,称量被检吸量管某一刻度内所容纳或放出的纯水的质量,再由水在该温度下的密度求得被检吸量管的容积(需对玻璃热膨胀、砝码密度和空气浮力等因素的影响进行修正)。水为蒸馏水或去离子水,需符合二级水标准。3.测量环境温度为(20±5)℃且水温变化不大于1℃/h,应避免震动和热源直接照射。 First, an overview 1. Measurement based on JJG196-2006 “commonly used glassware test procedures.” 2. Measurement principle For this test using the measurement method, weighed amount of pipette was seized within a certain scale of pure water contained or released, and then measured by the density of water at the temperature to be seized pipette Volume (need to amend the glass thermal expansion, weight density and air buoyancy and other factors to be amended). Water is distilled or deionized water, to meet the secondary water standard. 3. Measurement of ambient temperature (20 ± 5) ℃ and the water temperature does not change more than 1 ℃ / h, should avoid direct vibration and heat exposure.