Starches and derived products -- Determination of sulfur dioxide content -- Acidimetric method and nephelometric method

Document Number: ISO 5379:1983
File Size: 1.06 MB
Language: English
Provider: ANSI
Shipping: Available for download - Link will be provided in My ComplianceOnline section

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Product Details

Entrainment in a current of nitrogen of the gas extracted from the acidified and heated product, and fixing and oxidation of the gas by bubbling through a dilute solution of neutral hydrogen peroxid. Titration of the sulphuric acid formed with standard volumetric sodium hydroxide solution of nephelometric determination in the case of low contents.

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