Pollutant Effects of Phosphates and Nitrates
Product Number: SA08543
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Grades 6 and up. Use samples of fresh water from nearby waterways. Controlled experiments are set up to observe and determine the effect (both qualitative and quantitative) on fresh water when phosphate and nitrate compounds are added. Over a period of ten days, you will be able to observe the blooming of algae and bacteria. This kit is ready for immediate use and includes easy-to-follow instructions. Can be self-paced and used by all ages. Complete for 30 people.WARNING: Choking Hazard. Small Parts. Not for children under 3 yrs.