Chinese codex(2000 edition)said that processing of ruddle is to calcine it thoroghly and quench with vinegar and grind it into meal.
《中国药典》2000年版规
,
赭石的炮制要
“煅至红透,醋淬,

粉的方法”。
赭石
红土做记号,使发红Chinese codex(2000 edition)said that processing of ruddle is to calcine it thoroghly and quench with vinegar and grind it into meal.
《中国药典》2000年版规
,
赭石的炮制要
“煅至红透,醋淬,

粉的方法”。
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