University Chemistry ›› 2026, Vol. 41 ›› Issue (3): 77-86.doi: 10.12461/PKU.DXHX202507036

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Specifications of Laboratory Water and Suggestions on the Use of Conductivity Meter

Wan Li1, Xiaohang Qiu2, Xiuyun Wang3, Mei Shi4, Xiuqiong Zeng5, Yanping Ren6, Faqiong Zhao7, Min Hu8, Yiru Wang6, Juanjuan Song9, Yongxian Fan10, Dongcheng Liu11, Wenwei Zhang12, Weihong Li13, Yong Fan14, Jianrong Zhang12, Shuyong Zhang15   

  1. 1 National Demonstration Center for Experimental Chemistry Education (University of Science and Technology of China), School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China;
    2 National Demonstration Center for Experimental Chemistry Education (Nankai University), College of Chemistry, Nankai University, Tianjin 300071, China;
    3 National Demonstration Center for Experimental Chemistry Education (Dalian University of Technology), School of Chemistry, Dalian University of Technology, Dalian 116024, Liaoning Province, China;
    4 National Demonstration Center for Experimental Chemistry Education (Fudan University), Department of Chemistry, Fudan University, Shanghai 200433, China;
    5 National Demonstration Center for Experimental Chemistry Education (Zhejiang University), Department of Chemistry, Zhejiang University, Hangzhou 310058, China;
    6 National Demonstration Center for Experimental Chemistry Education (Xiamen University), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, China;
    7 National Demonstration Center for Experimental Chemistry Education (Wuhan University), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China;
    8 School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, China;
    9 National Demonstration Center for Experimental Chemistry Education (Inner Mongolia Minzu University), College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, Inner Mongolia Autonomous Region, China;
    10 National Demonstration Center for Experimental Chemistry and Chemical Engineering Education (Zhejiang University of Technology), College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
    11 National Demonstration Center for Experimental Chemistry Education (Guangxi Normal University), School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, Guangxi Zhuang Autonomous Region, China;
    12 National Demonstration Center for Experimental Chemistry Education (Nanjing University), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China;
    13 National Demonstration Center for Experimental Chemistry Education (Peking University), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;
    14 National Demonstration Center for Experimental Chemistry Education (Jilin University), College of Chemistry, Jilin University, Changchun 130012, China;
    15 School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
  • Received:2025-07-03 Accepted:2025-07-21 Published:2026-03-24
  • Contact: Yanping Ren, Jianrong Zhang, Shuyong Zhang E-mail:ypren@xmu.edu.cn;jrzhang@nju.edu.cn;syzhang@sdu.edu.cn

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Abstract: The proper selection and use of laboratory water are fundamental to chemical experiments. Choosing the appropriate grade of laboratory water based on the specific requirements of different experiments is essential for ensuring the accuracy of data and the reliability of experimental results. However, the current terminology for laboratory water is extensive, encompassing not only tap water but also distilled water, deionized water, purified water, and ultrapure water, which poses certain confusion for users. To address this issue, this article systematically reviews the types, purification methods, and specifications of laboratory water, as well as water purity testing and the operational guidance for conductivity meters. Additionally, it provides detailed suggestions on the storage and usage of laboratory water. The aim of this article is to serve as a reference for laboratory teaching and research in universities, helping laboratory personnel scientifically select and use laboratory water to ensure a smooth experimental process.

Key words: Chemical experiment, Laboratory water, Preparation of pure water, Specifications of pure water, Pure water testing, Conductivity meter, Operation standards