What is needed

Safe Water Science’s lessons and activities use inexpensive, common materials that can be purchased at local grocery and pet supply stores. However, thanks to our sponsor, kits containing supplies to conduct all four lessons each can be purchased for only $25 per kit, including shipment and handling.

Below you can find the content of the kit and what is needed for each lesson.

Lesson 1

30-mL bottle of “Typhoid Contaminant” (1 M sodium hydroxide) –  for refill, contact a science supply company or use Drano

30-mL bottle of “Typhoid Detector” (phenolphthalein, a base indicator) – for refill, contact a science supply company

32 small plastic 5-oz. cups ( reusable)

32 x 6 cotton swabs

Lesson 2

Pulverized dirt

Food coloring (red or blue)

1 large jar or beaker (at least 1 L in size) for mixing dirty water

1 long-handle plastic stir spoon (or paint stir stick)

9 “Slushie” lids (or 9 plastic 9-oz. cups with hole cut in bottom)

9 clear plastic 9-oz. cups to hold student groups’ dirty water (reusable)

9 clear plastic 9-oz. cups to collect filtered water (holds inverted slushy lid) (reusable)

Cheese Cloth for 9 filtering set-ups

49 rubber bands

49/2 (about 25 ) Coffee filters

Supply of aquarium pebbles

Supply of fine aquarium sand

Supply of activated granular charcoal

1 plastic colander sheet for separating filter materials to reuse in future labs

Lesson 3

1 large bucket (holds 5 gallons)

Pulverized dirt

8 clear plastic 9-oz. cups to contain the dirty water for Alum activity

(can re-use cups from lesson 2)

8 clear plastic 9-oz. cups to hold clean filtered water for Alum activity

(can re-use cups from lesson 2)

8 plastic teaspoons for stirring

6 tsp. lime powder (calcium hydroxide)

6 tsp. alum (aluminum sulfate)

16 plastic 2-oz.cups (8 for lime, 8 for alum) (reusable)

2 mini spoons, to measure 1/8 tsp. for alum and lime (reusable)

32 x 6 Coffee Filters for filtering alum coagulate

1 long-handle plastic stir spoon (or paint stir stick) (can use spoon from lesson 2)

6 packets of P&G Purifier of Water

1 large jar or beaker for collecting the P&G Purifier of Water filtrate (at least 1 L in size) (can use beaker from lesson 2)

32 x 6 small 1-oz. paper sampling cups for drinking clean water from the P&G Purifier of Water activity

 

Of course when doing these experiments it is important to utilize safety equipment like safety goggles and gloves.