Page 10 - Demo

1-800-452-1261
FLINNSCI.COM
EARTH SYSTEMS: WATER, continued ONLY JPG
Nitrate–Nitrogen Test Kit
Quickly measure nitrate–nitrogen from 0 to 15 ppm in local waters in less time using LaMotte tablet reagents and the unique Octa-Slide 2 Comparator. Simply insert the tube containing the reacted sample into the comparator and match the color of the sample to the color-coded standards. Kit includes tablets for 50 tests.
AP5024 I $67.30
Hardness Test Kit—Total/Ca/Mg
This kit tests for total, calcium and magnesium hardness by using the Direct Reading Titrator method. All results are as CaCO3. Range/ sensitivity is 0–200 ppm/4 ppm CaCO3. AP5020 I $66.95
Ammonia Nitrogen Test Kit
Conduct an important water quality test with this LaMotte test kit. Ammonia causes direct toxic effects on aquatic life, which can be affected by pH and temperature. Kit contains materials for at least 50 tests.
AP5010 I $89.90
FLINN SCIENTIFIC I EARTH SYSTEMS
Nitrate in Water Test Kit
Check for nitrates in your local surface waters with this safe, simple, tablet-type test. Kit includes teaching guide, background information, reproducible student hand- outs, sample tube and tablets for 15 tests. Complete for 30 students working in pairs. AP6139 I $12.45
Salinity of Water—
Approximately 70% of the Earth’s crust is covered in water, with saltwater accounting for 97%. The purpose of this lab is to analyze the amount of sodium chloride in saltwater and to gain an understanding of how salinity affects the availability of water and water shortages. FB1878 I $75.30
Give students a firsthand look at ocean circulation patterns! Easy-to-use activity model demonstrates the effects of temperature and salinity on the circulation of water. Observe the striking effect that water temperature has on ocean currents. Then set up a saltwater concen- tration gradient to investigate ocean currents that arise when cold, dense saltwater sinks. AP7313 I $31.95
Student Laboratory Kit
Ocean Current—
Demonstration Model
10