The Student Room Group

How to make an indicator?

I want to do an acid-base titration using vinegar and fairyliquid at home.
I need an indicato,r and have read that I can use red onions or black grapes.
How do I prepare the indicator, or is there a better indicator I can find in my house?
Is this experiment possible, or do I have to use different substances?
I think you can use red cabbage or beetroot, I'm not too sure though I've not made one since year 7.


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Thanks, but to prepare it do i just use the juice, by crushing it?

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