"Unit 8: Aquatic and Terrestrial Pollution"

High density polyethylene.

Stackable steel sieves for separating sediment or particles.

See the clarity or turbidity of a water source.

The Only Tabletop Composting Activity on the Market Today

Used for incubating diluted samples to determine biological oxygen demand.

This user-friendly meter has a long battery life and plenty of helpful functions.

An economical set of durable sieve that will hold up to tough use.

Use the Turbidity sensor to measure the turbidity of freshwater or seawater samples. Its small, sleek design and simple setup make it easy to use at the collection site or when you return to the classroom.

This 4-wavelength Vernier® Colorimeter is great for Beer's law experiments, determining the concentration of unknown solutions, or studying changes in concentration vs. time.

-The new design includes a one-button automatic calibration feature.
-Fifteen 3.5 ml cuvettes are included.
-A package of 100 replacement cuvettes (with 20 lids) is available separately.

Ward's precision balances are perfect for school laboratories, AP classes, or prep-room use. These balances measure in grams and Newtons.

A digital hanging scale with a built-in handle.

Less confusing than other test kits that require students to distinguish different bacterial colonies on a Petri dish, this test features a distinct color change that will tell with certainty if fecal coliforms are present.

Clean Up an Oil Spill Right in Your Classroom.

In this activity, students explore methods to treat wastewater by creating a laboratory model that simulates large-scale commercial water treatment methods.

Measure the oxygen created by an aquatic plant under different conditions to determine its NPP.

Hands-on, standards-based lab kit that helps students investigate toxins and contaminates from human-made and natural sources.