测量冷却液浓度=测量“成功”
乳化液的冷却液浓度是现场检测中的最重要参数。记住：没有稳定的浓度，就没有稳定的加工！
每次加注液槽时，都应检测冷却液浓度——每周必须至少在监测表中记录一次数据，可以人工或通过电子设备完成，例如， 瑞科拓公司（Liquid Tool Systems AG）的冷却液管理设备。.
手动测量
测量金属加工液浓度的一种简单且经济有效的方法是使用手持式折光仪。众所周知，光通过液体时会改变方向，这叫做折射。折光仪用于测量这种方向变化的角度，称为折射角。
刻度的读数可通过折光仪上清晰的分色来识别，表明乳化液的浓度水平。
对于某些金属加工液，测量刻度上的读数需要乘以产品特定的“折光系数”后得到的结果才是乳化液的实际浓度。
用水来校准手持折光仪是很重要的一个步骤。在测量乳化液浓度之前，应使用高质量水进行零点校正。如果折光仪上的读数看起来很分散，则说明乳化液不稳定或含有大量不饱和油。
通过折光仪进行读数
手持折光仪
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