Water Purification STEM kit

Includes everything needed for a chemical water purification experiment and a physical (filtration) water purification experiment.

• Reusable purification column
• Filtration materials:
  - Granite pebbles
  - Porcelain sand
  - Activated carbon
  - Quartz sand
  - Saleratus (sodium bicarbonate)
  - Potassium alum (potash)
  - Filter paper × 6
  - Sponge × 2
• Step-by-step instruction booklet

Once packed, the column can be re-used multiple times. After several uses, the column can be disassembled and the materials rinsed with clean running water, dried, then put back in the box to be stored for re-use in the future (ideal for educational settings, where one kit can be used many times).

This Water Purification STEM Kit gives kids a real-world look at how science helps solve one of Earth’s most important challenges — access to clean water. By experimenting with natural filtration materials, children learn both the how and why of purification. The kit is ideal for homeschooling as well as an engaging educational play activity for kids.

• Discover how different materials filter and clean water.
• Learn about sedimentation, filtration and chemical processes used all over the world to purify water.
• Build awareness of global water scarcity and environmental issues.
• Develop problem-solving and critical-thinking skills.
• Enjoy hands-on experimentation with visible, satisfying results.
• Encourage teamwork, observation, and scientific curiosity.
• Gain early exposure to environmental science and sustainability concepts.
• This kit provides the perfect project for budding scientists — it makes an ideal first science fair exhibit or classroom demonstration.
  

This STEM kit turns abstract ideas into a fun, tangible learning experience — ideal for classrooms, STEM clubs, or home exploration.

Q: What age is this kit suitable for?
A: It’s recommended for ages 10 and up. Younger children can also play with this STEM kit with adult supervision.

Q: Are the included materials safe for kids to play with?
A: Yes. All materials in this kit are non-toxic and commonly found in nature. The purification column is made from durable, non-toxic ABS plastic, ensuring safe, hands-on experimentation for kids.

Q: How does this kit work?
A: The kit uses layers of natural materials—like sand, pebbles, and activated carbon—to filter and purify dirty water. Coarser materials on top trap larger particles, while the finer layers below remove smaller ones, even microscopic impurities. Kids can watch clean water emerge before their eyes! The kit also includes a chemical purification experiment that uses alum and bicarbonate of soda to purify water.

Q: Is the purified water safe to drink?
A: No. The experiments demonstrate the science of purification and filtration but are not intended to produce drinking water. Therefore, you should not attempt to drink water purified using this kit.

Q: Can the column be reused?
A: Yes! Once set up, the purification column can be rinsed and used multiple times for further experiments.

Q: What scientific concepts does it teach?
A: Filtration, sedimentation, absorption, chemistry, and the importance of clean water in environmental systems.

Q: Is it suitable for school projects?
A: Absolutely — this kit makes an excellent project for science fairs, environmental lessons, or group learning activities. Lightweight and easy to transport in its box and can be set up in a very short time, so you're ready to amaze onlookers with the minimum of fuss.

• Assembled dimensions:
  - Length: 30 cm
  - Base diameter: 7 cm
• Box dimensions:
  - Length: 20.5 cm
  - Depth: 6.0 cm
  - Width: 15.5 cm
• Product packaging: Boxed

Suitable age: 10+ (younger kids can also experiment with adult supervision).

Blog posts about STEM for kids:

The Crucial Role of STEM Education

Nurturing Young Minds in the Digital Age

Other related resources:

Youtube video: Water purification working model