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About This Item
Full Description
ISO 777:2005 specifies the procedure for the determination of acid-soluble calcium by atomic absorption spectrometry or by plasma emission spectrometry.
It is applicable to all kinds of paper, board and pulp.
It specifies a method to determine the acid-soluble part of the incineration residue, i.e. that part of the ignition residue obtained after incineration that is soluble in hydrochloric acid. If the residue is completely soluble, the result obtained by the procedure specified in ISO 777:2005 is taken as the total amount of calcium in the sample.
Document History
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ISO 12830:2019
Paper, board, pulps and cellulose nanomaterials - Determination of acid-soluble magnesium, calcium, manganese, iron, copper, sodium and potassium- Most Recent
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ISO 12830:2011
Paper, board and pulps - Determination of acid-soluble magnesium, calcium, manganese, iron, copper, sodium and potassium- Historical Version
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ISO 778:2005
Paper, board and pulp - Determination of acid-soluble copper- Historical Version
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ISO 777:2005
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Paper, board and pulp - Determination of acid-soluble calcium- Historical Version
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ISO 779:2005
Paper, board and pulp - Determination of acid-soluble iron- Historical Version
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ISO 1830:2005
Paper, board and pulps - Determination of acid-soluble manganese- Historical Version
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ISO 9668:1990
Pulps -- Determination of magnesium content -- Flame atomic absorption spectrometric method- Historical Version