• This kit can be examined for the hardness of tap water and mineral water, whether or not of calci (residual chlorine) or the degree of acid and alkali. The kit includes "hard water and soft water test drug", "karukydetector", "pH measuring drug", test tube and tsp, so you can prepare drinking water and start experimenting
• See videos! The series features an experiment while watching videos on how to do it. The tools and tools are included for the experiment, so you can easily experiment with your purchase. This product can be experimented in one day, so it is perfect for those who don't have time
• Includes a full 16-page guidebook with detailed experimentation and procedures. It also includes a comprehensive report, so it supports the full range of free research
• For elementary school grade 3 and up. ●Experiment time: 1 day. Before using the kit, please read the included guide carefully and follow the instructions and precautions
• Included in the kit: Hard water and soft water testing agent, hard water and soft water ratio charts, khaki (residual chlorine) detector, pH measuring agent, pH ratio table, test tube (5 pieces), tsp (glare) guide, reporting reports