Samples
colour
PH range
Samples
Lemon
Lemon
Vinegar
Vinegar
Tomato juice
Tomato juice
Black coffee
Black coffee
Milk
Milk
Sugar solution
Sugar solution
Tooth paste
Tooth paste
Lime water
Lime water
Sodium hydroxide
Sodium hydroxide
Hydrochloric acid
Hydrochloric acid
colour
PH range