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

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Iron(II) sulfate (British English: iron(II) sul...

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Sodium hydroxide, also known as lye and caustic...

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Sodium hydroxide, also known as lye and caustic...

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Ammonium sulfate

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

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Sodium carbonate, Na₂CO₃·10H₂O, is the inorgani...

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pH Indicator Papers & amp; Test Papers pH indic...

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