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What is diffrence between residue on ignition and sulphated
ash?
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Answer Posted / sivakumar.a
When a sample is ignited to ash as such this is called residue on ignition as the meaning itself tells us., while the sulphated ash is certain samples need to be charred with sulphuric acid before ignition and the residue contains sulphates which is called sulphated ash. Eventhough USP and BP says the samething this is product specific.
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