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Chapter topics:
- Water hardness
- What the hardness of water means
- How water becomes hard
- Types of water hardness
- Effects of water hardness
- Methods of removing water hardness
A valid license for package „Opiq Private User Package”, „Opiq Pupil Package” or „Opiq Teacher Package” is required to use the kit. Click the link with the package name to learn more about the package and order a license.
If you have a valid license, log in to view the chapter.
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