DIN EN ISO 11210:2022-06 草案 珠寶和貴金屬 鉑合金中鉑的測定 氯化銨沉淀后重量法 (ISO/DIS 11210:2022)
Draft Document - Jewellery and precious metals - Determination of platinum in platinum alloys - Gravimetric method after precipitation using ammonium chloride (ISO/DIS 11210:2022); German and English version prEN ISO 11210:2022