共找到 150 條與 灰吹 相關(guān)的標(biāo)準(zhǔn)，共 10 頁(yè)
Determination of gold in gold jewellery alloys - Cupellation method (fire assay).
Cupellation method for determination of gold in gold jewellery alloys, preferably of between 333 and 930 parts by mass per thousand of gold
Determination of gold in gold jewellery alloys. Cupellation method (fire assay)
This document specifies a cupellation method (fire assay) for the determination of gold on a material considered homogeneous. The gold content
Jewellery and precious metals - Determination of gold - Cupellation method (fire assay)
1.1 These test methods cover cupellation analysis of bullion having chemical compositions within the following limits:
Standard Test Methods for Determination of Gold in Bullion by Cupellation
Gold jewellery alloys—Determination of gold—Cupellation method (fire assay)
本標(biāo)準(zhǔn)規(guī)定了采用灰吹法（火試金法）測(cè)定金合金首飾中金含量的方法。 本標(biāo)準(zhǔn)適用于金含量在333.0%～999.5%的各種金和K金首飾（不含鉑、銠等不溶于硝酸的成分）金含量的測(cè)定。 本標(biāo)準(zhǔn)被GB 11887指定為金和金首飾中金含量分析的仲裁方法
Gold jewellery alloys.Determination of gold.Cupellation method (fire assay)
1.1 These test methods cover cupellation analysis of bullion having chemical compositions within the following limits:
Standard Test Methods for Determination of Gold in Bullion by Cupellation
Intended as the referee method for the determination of fineness in alloys covered by BS 29202
Determination of gold in gold jewellery alloys - Cupellation method (fire assay)
La norma specifica le modalità per la determinazione dell'argento nelle leghe di argento
Procedures for chemical analysis of metal - Determination of silver in silver alloys - Cupellation method
Specifies a cupellation method (fire assay) for the determination of gold in gold jewellery alloys. The procedure is applicable specifically to gold
Determination of gold in gold jewellery alloys - Cupellation method (fire assay)
La norma specifica un metodo di coppellazione (saggio al fuoco) per la determinazione dell'oro nelle leghe d'oro per gioielleria. Il
Jewellery - Determination of gold in gold jewellery alloys - Cupellation method (fire assay)
Determination of gold in gold jewellery alloys - Cupellation method (fire essay)
This International Standard specifies a cupellation method (fire assay) for the determination of gold in gold jewellery alloys. Preferably the gold
Determination of gold in gold jewellery alloys - Cupellation method (fire assay)
本文件規(guī)定了用于測(cè)定均質(zhì)材料中金含量的灰吹法（火試金法）。樣品的金含量?jī)?yōu)選在100至999.5‰（重量比）之間。純度高于999.5‰的金可通過光譜法（如ISO 15093）進(jìn)行測(cè)定。 該程序適用于大多數(shù)類型的金樣品。對(duì)于特定情況（存在大量賤金屬、鉑或鈀、銀），需進(jìn)行一些修改。該方法不適用于存在超過
Jewellery and precious metals. Determination of gold. Cupellation method (fire assay)
This International Standard specifies a cupellation method (fire assay) for the determination of gold in gold jewellery alloys. The gold content
Determination of gold in gold jewellery alloys - Cupellation method (fire assay)
