Lifestraw water filter $20
Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.
Step 1: Cut Off Cap From Intake End
Step 2: Drill 1/4" Hole in Intake Cap
Step 3: Grab One Gallon Freezer Bag and Cut Off One Corner, Just Smaller Than the Diameter of the Straw
Step 4: Place Cap Inside Bag. Snap Securely Back on to Straw
Step 5: Fill Your Bag With Water and Apply Gentle Pressure or Suck Straw to Prime.
Fill your hydration bag, drinking bottle, pot or cooking bag with clean water good for 1000ltrs according to manufactures notes.