Acid Rain and Buffers

Catalog #STO-107

Learn how certain types of lake bottoms can act as buffers.

Time To Complete Time to complete: One 40-minute class period + homework

Why does acid rain decrease the pH of some lakes and not others? Explore the role of different bottom materials in keeping the pH of lakes constant.

  • Create mini-lakes with different bottom materials and limestone.
  • Add acid rain to your mini-lakes and test the pH.
  • Determine which lake bottom material is a buffer that keeps the pH of the mini-lake water relatively constant.

Limit 1 free sample per customer

Quantity Price
1 - 9$10.00 ea.
10 - 24$9.50 ea.
25 - 1000$9.00 ea.

Each assembled kit contains:

  • Student instructions
  • 1 plastic vial of sand
  • 1 plastic vial of limestone
  • Simulated “Acid Rain”
  • 12 strips of pH paper
  • pH color chart
  • 1 dropper
  • 2 stirrers

Also required: Water, safety goggles

Buy Unassembled and Save!

Refill Your Kit

Acid Rain and Buffers – Pack of 10 Unassembled Kits

Catalog # STO-107U

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$80.00 ea.
10 - 1000$76.00 ea.

Acid Rain and Buffers – 10 Kit Refill Pack

Catalog # STO-107R

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

Quantity Price
1 - 9$32.00 ea.
10 - 1000$30.40 ea.

Teacher Testimonial

So helpful! Reasonably priced - usable for many levels. Thank you!

- Science teacher (KY)

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STO-107