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A hydrometer or lactometer is an instrument used f...

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

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

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Sodium sulfate (also known as sodium sulphate or s...

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

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Benzene is an organic chemical compound with the m...

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Calcium hydroxide (traditionally called slaked lim...

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Alizarin Red S (also known as C.I. Mordant Red 3, ...

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