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Optical brighteners, optical brightening agents (O...

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Chromic acid is jargon for a solution formed by th...

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Humic substances (HS) are colored relatively recal...

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Sulfur (also spelled sulphur in British English) i...

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Activated carbon, also called activated charcoal, ...

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Sodium Nitrite

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Cadmium granular

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

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