burkert电导率仪8221 宝德电导率仪8221、burkert电导率仪8221、宝德电导率仪8221、burkert 8221电导率仪、宝德 8221。电导率与水的硬度:水溶液的电导率直接和溶解固体量浓度成正比,而且固体量浓度越高,电导率越大。电导率和溶解固体量浓度的关系近似表示为:1.4μS/cm=1ppm或2μS/cm=1ppm(每百万单位CaCO3)。
burkert电导率仪8221 宝德电导率仪8221简介:
The 8221 Hygienic conductivity probes are used to determine electrical conductivity in solutions.Due to their hygienic design and the robust layout, these conductivity probes are suitable for use under demanding conditions in food &beverage, pharmaceutical, biotechnology and the general chemical industry.
注意事项:
(1)以电导率间接测算水的硬度,其理论误差约20-30ppm
(2)溶液的电导率大小决定分子的运动,温度影响分子的运动,为了比较测量结果,测试温度一般定为20℃或25℃
(3)采用试剂检测可以获取比较准确的水的硬度值。