26 Aug 2009 by Metrohm (UK)
Metrohm has developed a direct-injection, suppressed ion chromatography method for determining chloride and sulphate lower limits that is compliant with ASTM D7319 and ASTM D4806.
ASTM has balloted and approved a sulphate specification for fuel ethanol, stipulating a maximum level of sulphate in ethanol of 4mg/kg (ppm) and a chloride contamination limit of 40mg/kg (ppm).
It has also lowered the chloride limit to 10mg/kg in its specification for fuel blending (D4806).
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