We use cookies to provide you with a great user experience. By using our site, you accept our use of cookies. You can review our cookie and privacy policy here.
  • Service & Support

    Contact Us

    Our Customer Service team is available from 8am to 6:30pm, ET, Monday through Friday. Live chat is available from 8am to 5:30pm ET, Monday-Friday.

    Email Customer Service
    Live Chat

    International Sales & Service

    We serve educators in more than 170 countries worldwide. Create a quote request on our website or contact our International Sales Team.

    International Ordering
  • Shopping

    Login or register now to maximize your savings and access profile information, order history, tracking, shopping lists, and more.

  • Quick
  • My Cart

    My Cart

    Your Shopping Cart is currently empty. Use Quick Order or Search to quickly add items to your order!

Carolina EcoKits®: Nitrogen Cycle (with voucher)

(in stock)


Grades 9-12.

  • Conduct soil tests to measure nitrogenous compounds in soil
  • Compare the biomass of mature clover with Rhizobium to that of mature clover without Rhizobium
  • Examine and compare root nodules of mature clover with Rhizobium to mature clover without Rhizobium

Students observe the nitrogen cycle at work by growing clover both with and without Rhizobium, a nitrogen-fixing bacterium. They will compare the biomass and nitrogen content of the soil to uninoculated clover to understand how nitrogenous compounds are cycled with through the aid of bacteria. Kit accommodates 30 students working in pairs and includes a voucher to request the perishable material later at your convenience. Contact us or return the voucher at least 2 weeks prior to requested delivery date to ensure prompt arrival of material.


What’s Included:
  •  Clover Seeds (inoculated with Rhizobium) (voucher item)
  •  Uninoculated Clover Seeds (voucher item)
  • 15 Jumbo Pipets
  • 1 Plant Tray
  • 36 Planting Cells
  • 1 Vermiculite
  • 15 Rulers
  • 15 Sorting Brushes
  • 32 Plant Labels
  • 1 Teacher's Manual and Reproducible Student Guide
Needed But Not Included:
  • 15 Permanent Markers
  • 15 Scissors
  • 15 Beakers, 100 mL
  • 1 Fluorescent Light Bank
  •  Balance(s) (accurate to 0.01 g)
  •  Black Paper
  •  Paper Towels, Paper Plates, or Plastic Trays
  •  Water
Return Policy:

If for any reason you are not satisfied with this item, it is eligible for a return, exchange, refund, or credit up to 180 days from date of purchase. Restrictions may apply. Returns & Exchanges Policy.


Questions & Answers