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Carolina ChemKits®: Understanding pH Measurement Kit

(in stock)


Grades 9-12. In this inquiry-based activity, students learn about pH and the use of red and blue litmus paper, universal pH paper, and common liquid indicators, such as methyl red, bromthymol blue, and phenolphthalein. Students determine the pH of known and unknown acids and bases, measure the pH of various household products, and demonstrate that carbon dioxide in water is acidic. The kit contains numerous extension activities, including how to calculate the Ka of a weak acid, how to measure accurately the pH of rain, and how to make litmus paper.

Materials are sufficient for 30 students working in groups of 3.


Shipping Information or Purchase Restrictions
  • Exclamation icon Excepted Quantity - This product is/contains a DOT regulated hazardous material in an excepted quantity. This does not incur a hazardous materials fee. Orders shipping to HI and AK are subject to review and may incur additional shipping charges.
What’s Included:
  • 1 Spectral pH Paper Dispenser (pH 1.0-14.0)
  • 1 Litmus Acid/Base Indicator Strips
  • 10 Reaction Trays, 20 well
  • 2 Bromothymol Blue, 0.04%, 15 mL
  • 2 Methyl Red, 0.02%, 15 mL
  • 2 Phenolphthalein, 1%, 15 mL
  • 2 1 M Hydrochloric Acid, 15 mL
  • 2 1 M Sodium Hydroxide, 15 mL
  • 2 0.1 M Acetic Acid, 15 mL
  • 2 0.1 M Sodium Bicarbonate, 15 mL
  • 12 Straws
  • 10 pH Charts, 1-14
  • 1 Teacher’s Manual and Reproducible Student Guide
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Needed But Not Included:
  • 10 Stirring Rods
  • 10 Graduated Cylinders
  • 30 Small Beakers, 50-150 mL
  •  Household Liquids (e.g., liquid soaps, shampoos, detergents, window cleaners)
  •  Beverages (e.g., coffee, tea, water, soft drinks, fruit juices)
  •  Food Items (e.g., tomato, lemon, apple, orange)
  •  Medical Items (e.g., aspirin, ibuprofen, milk of magnesia)
  •  Paper and Tape
  •  Pencils and Markers
  •  Safety Goggles
  •  Lab Aprons
  •  Paper Towels
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Return Policy:

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