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A universal indicator is a pH indicator made of a ...

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A universal indicator is a pH indicator made of a ...

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Zinc, sometimes called spelter, [4] is a chemical ...

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Methyl orange is a pH indicator frequently used in...

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pH indicator Phenolphthalein (pH indicator) below ...

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Aluminium powder is powdered aluminium. This was ...

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Bromophenol blue is also used as a dye. At neutral...

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Calcium carbonate is a chemical compound with the ...

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