pH Paper: Dissolve a small volume of substance in water if solid. Dip the paper into the solution. Compare the paper with a pH chart., Only a small volume of substance is required., The substance tested needs to be dissolved first., Universal Indicator: Add a few drops to the substance and compare the colour with a pH chart., The substance tested can be solid or liquid, The indicator can change colour in the bottle if the lid is not closed properly., pH Meter: Dip the meter into a volume of substance and read the pH on the meter., A more accurate pH can be recorded, A larger volume of substance is needed to cover the meter.,

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