Plants need a variety of nutrients and minerals to grow and maintain overall health. The three main nutrients that plants require to survive and thrive are nitrogen, phosphorus, and potassium (also known as NPK). In this activity, students will extract nutrients from a soil sample and perform analyses to determine if nitrogen, phosphorus, and potassium concentration is abundant, adequate, or deficient. Find problems with plants before they happen. In this kit, students can learn about the 3 main nutrients that contribute to plant health and how to measure their concentrations in soil. Kit contains enough materials to perform 50 tests. Aligned to the Next Generation Science Standards (NGSS)* Disciplinary Core Ideas: ESS2.A Performance Expectations: MS-PS1-2, PS1.A, PS1.B Cross Cutting Concepts: Scale, Proportion and Quantity; Structure and Function Engineering Practices: Constructing Explanations and Designing Solutions; Planning and Carrying Out Investigations This kit includes: 5 Soil Collection Bottles 5 Plastic Scoops 5 Pipettes Soil pH Indicator, 1x120mL Nitrogen Extraction Solution, 1x120mL Nitrogen Indicator Powder, 1x30g Phosphorus Extraction Solution, 1x120mL Phosphorus Reagent, 1x30mL Phosphorus Indicator Powder, 1x15g Potassium Reagent, 1x120mL Potassium Indicator Powder, 1x15g DOT Info: UN1170, Ethanol, 3, II, LTD QTY WARNING: This product can expose you to chemicals including chromium hexavalent compounds, which are known to the State of California to cause cancer and reproductive harm. For more information go to http://www.P65Warnings.ca.gov. *"Next Generation Science Standards" is a registered trademark of Achieve. Neither Achieve nor the lead states and partners that developed the Next Generation Science Standards was involved in the production of, and does not endorse, this product.