Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use. Separation by column chromatography and determination of the different phosphate forms.

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Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use. Condensed phosphates for industrial use (including foodstuffs). Determination of arsenic content. Silver diethyldithiocarbamate photometric method.

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Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use.. Condensed phosphates for industrial use (including foodstuffs) - determination of chloride content - potentiometric method.

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Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use. Condensed phosphates for industrial use (including foodstuffs): determination of chloride content.

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Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use. Condensed phosphates for industrial use (including foodstuffs) - determination of oxides of nitrogen content - 3,4-xylenol spectrophotometric method.

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Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate).. Determination of iron content.

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Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use. Condensed phosphates for industrial use (including foodstuffs): determination of iron content.

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Plastics piping systems. Polyethylene (PE) pipes and fittings for water supply. Fittings.

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