Bramley's Blue Indicator
starting at $14.99 per bottle
Bramley's Blue Indicator is the best indicator for kids and teens.
It's non-toxic, and is safe to digest. The only thing not safe is the taste.
Bramley's Chemical Emporium
Website: parmcityschools.org
Location: 6285 West 54th Street, Parma, OH, United States
Phone: 4408852300
Indicator strips right after use
Vinegar on the left, baking soda on the right
Indicator after being left out to dry
Vinegar on the left (blueish red), and baking soda on the right (green)
Color of red cabbage juice
The color varies between a dark purple and blue
The Sci Guys: Science at Home - SE2 - EP4: Red Cabbage pH Indicator - Acid Base Indicator