Treating Dirty Water

Catalog #STO-155

Build and test models to illustrate water treatment processes.

Time To Complete Time to complete: Three or four 40-minute class periods

Improving Lakeville’s water treatment plant is necessary because recent water tests indicate that water from the treatment plant is not safe to drink.

  • Build and test small models to illustrate water treatment processes—screening, coagulation, filtration, and disinfection.
  • Conduct tests and analyze evidence to determine whether a new coagulating agent is better than the current one.
  • Determine whether adding activated charcoal to the filter improves water quality.
  • Determine whether the filtered water needs to be disinfected to remove pathogens.
  • Use information from a reading to determine if disinfection with chlorine is needed.

Limit 1 free sample per customer

Quantity Price
1 - 9$18.00 ea.
10 - 24$17.10 ea.
25 - 1000$16.20 ea.

Each assembled kit contains:

  • Tube of dried materials to create simulated “dirty” water from the lake
  • Fabric screen
  • Rubber band (latex free)
  • 2 small labeled cups with lids
  • Microtube of "aluminum sulfate" and labeled dropper
  • Microtube of "PolyClear" and labeled dropper
  • 2 small graduated measuring cups
  • Sand
  • Gravel
  • Activated charcoal
  • Small spoon
  • 2 compressed sponge circles
  • Graduated transfer pipet
  • Stir stick
  • 2 funnels
  • 2 large plastic cups with lids
  • 2 small labeled cups
  • pH Testing Instructions
  • 2 pH test strips
  • E. coli Testing Instructions
  • Microtube of "E. coli Testing Solution" and labeled dropper

Also required: Tray or newspaper for student work (to make clean-up easier), calculator, safety goggles, tap water, paper towels for clean-up

Buy Unassembled and Save!

Refill Your Kit

Treating Dirty Water – Pack of 10 Unassembled Kits

Catalog # STO-155U

Unassembled packs contain materials for 10 kits.

  • All supplies, lab materials, and printed labels
  • Student instructions copy master
  • Easy to follow instructions for kit assembly
Quantity Price
1 - 9$145.00 ea.
10 - 1000$137.75 ea.

Treating Dirty Water – 10 Kit Refill Pack

Catalog # STO-155R

Refill packs contain materials to replace consumable supplies for 10 kits.

Quantity Price
1 - 10$50.00 ea.
10 - 1000$47.50 ea.

Teacher Testimonial

Awesome. Can easily manipulate difficulty for varying grade levels.

- High School biology teacher (OK)

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STO-155