Acids and alkalis
-
Bee stings – acid or alkali?
Interesting article on bee stings, wasp stings and neutralisation. Useful background reading.
-
The acid test
Instructions on how to make a red cabbage indicator.
-
Unilever product information
From here you can find lists of ingredients of lots of beauty and household products.
-
Vinegar tips
This site gives 1001 household uses for vinegar.