Use this handy and versatile water quality testing device to monitor pH levels, temperature in Celsius or Farenheit, or electrical conductivity, which allows you to gauge the adjustment of nutrients, salts, and other elements for healthy plant growth. Excellent for hydroponic gardening or experiments in the classroom. LCD screen gives precise measurements to the hundreth decimal point.
Build your own windmill generator kit by recycling a plastic bottle!
Build an electromagnet, an electrical catapult, a doorbell chime, a telegraph, and more with this kit!
Use this kit to introduce electromagnetic principles in the classroom setting!
Learn about detective science through this fun fingerprinting kit!
Explore the wonders of wind power with this amazing kit!
Build your own 10 inch kaleidoscope with this great kit!
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