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A hydrometer or lactometer is an instrument use...

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An alum (/ˈæləm/) is a type of chemical compoun...

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The western desert of Egypt was a major source ...

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Sodium sulfate (also known as sodium sulphate o...

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Acetone (2-propanone or dimethyl ketone) is an ...

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Benzene is an organic chemical compound with th...

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Calcium hydroxide (traditionally called slaked ...

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Alizarin Red S (also known as C.I. Mordant Red ...

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