First, the tool is not used properly, and the resistance value needs to be measured by a professional resistivity meter. The ultimate conductivity of ultrapure water is 0.055, so your data is wrong. Second, ultra-pure water needs to be detected online, and the results may be inaccurate in a closed space. Nanjing Quan Kun specializes in producing reverse osmosis equipment.
References:
Nanjing Quan Kun Biology Science and Technology Co., Ltd.