Backyard Observation Supplies

• nitrogen (nitrate/nitrite/ammonium) test strips, available from most pet supply stores in the aquarium test equipment section or from science supply companies/as part of full water quality testing kit; (Select online retailers: Omega , Industrial Test Systems, Inc. ($15.99), Hach ($15.89)
• water collection bottles such as Hach 250 mL Polyethylene collection bottles ($43.55 for 12 pack). Small Nalgene bottles from an outdoor supply store also work well, $2-$5 from Nalgene.
• Internet connection
• Google Earth (download here; latest available version is recommended)
• The Citizen Scientist’s Guide to Earth Observations Water Quality Data Entry Sheet
• rubber gloves (optional)
• rubber boots (optional)
• bucket (optional)
• rope (optional)

Earth Observation Supplies

• Internet connection

Earth Observation Data Sheet