That would mean your coolant is low.
As a temp. indicator in thermometers.
A pH indicator is used only to measure the pH of the solution.
Universal Indicator turns concentrated HCl red because Universal Indicator turns strong acids reds.
With indicator papers the pH of a liquid is evaluated. Also many indicator papers are used for testing chemicals.
A universal indicator changes color in response to the pH of a liquid. Do determine the pH of the liquid, you need to refer to a color chart that tells you which color indicates which pH.
When the indicator shows that the test liquid is neutral.
When the indicator shows that the test liquid is neutral.
It is a liquid crystal that is joined in the coconut to make oil that can be an indicator..
A red cabbage indicator is a liquid made from mashed up red cabbage which you then put in a liquid to see whether it is acidic or not. If it is acidic the liquid would turn reddy orange and if it was an alkali ( the opposite to acid) it would turn purpley blue. This is if the liquid was clear in the first place.
You use Universal Indicator solution.
In the compass held inside a plastic ball filled with liquid on the dashboard:)
Water is NOT Universal Indicator. Water is often referred to as a Universal Solvent as a large number of substances are soluble in it. Universal Indicator is a chemical agent that can be used to test the pH of a liquid.