重金属 标准查询与下载
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The UK has been granted an A-deviation from EN 1904 as a number of requirements conflict with those of the Hallmarking Act 1973
Precious metals - The finenesses of solders used with precious metal jewellery alloys
This European Standard specifies the precious metal content in solders suitable for use inThe production ofjewellery made of precious metal alloys
Precious metals - The finenesses of solders used with precious metal jewellery alloys
Prezentul standard se refer? la uleiul alb greu, ob?inut din frac?iuni de uleiuri pro-venite din ?i?ei selec?ionat prin solventare selectiv
HEAVY WHITE OIL
Heavy metal grate trench
Paraffin heavy metal test method
Schválení ST SEV 806-77 doporu?ilo ministerstvo pr?myslu ?SR. Zpracovatel: Lachema, n. p., Brno: Ing. Hana Si?áková, ing. Ladislav Srp, Jitka Pokorn
Determination of heavy metals mpurities
Jewellery. Fineness of precious metal alloys
Vaseline heavy metal limit test method
Reagents. Methods for the determination of heavy metals
Reagents. Methods for determination of heavy metals
来自第附录50页
Appendix IX E Heavy Metal Inspection Method
来自第附录58页
Appendix Ⅷ H heavy metal inspection method
Jewellery. Fineness of precious metal alloys
4 处理方法 4.1 一般规定 1)污水处理方法和药剂的选择应考虑污水量、水质、回收有价金属的形式及其利用、药剂来源及其价格、地方条件、处理后水质的要求等因素，并进行技术经济比较后确定。 2)应充分研究利用实验室或者附近的污水、废气、废渣处理污水的可行性，做到以废治废。 3)不同污染源的
Specification for treatment of heavy metal wastewater in laboratory
本标准规定了墨锭中铅、镉、铬的石墨炉原子吸收光谱测定方法。 本标准适用于各墨锭中铅、镉、铬的含量测定
Determination of heavy metals (lead, cadmium, chromium) in ink sticks
