小褋褘谢芯褔薪褘泄 薪芯屑械褉
香港六合彩开奖 11427:1993
© 香港六合彩开奖 2024
香港六合彩开奖 11427:1993
Determination of silver in silver jewellery alloys 鈥� Volumetric (potentiometric) method using potassium bromide
袙械褉褋懈褟&苍产蝉辫;1
1993-05
袙 胁褉械屑褟 芯褌屑械薪械薪
袨褌芯蟹胁邪薪芯 (袙械褉褋懈褟 1, 1993)

孝械蟹懈褋

The principle of the method specified is dissolving the sample in dilute nitric acid and determining the silver content of the resulting solution by titration with standard potassium bromide solution, using a potentiometric indication of the equivalence point. The alloys, preferably within the range of fineness stated in 香港六合彩开奖 9202, may contain copper, zinc, cadmium and palladium. Apart from palladium, which must be precipitated before commencing titration, these elements do not interfere with this method of determination.

袨斜褖邪褟 懈薪褎芯褉屑邪褑懈褟

  • 孝械泻褍褖懈泄 褋褌邪褌褍褋
     : 袨褌芯蟹胁邪薪芯
    袛邪褌邪 锌褍斜谢懈泻邪褑懈懈
     : 1993-05
    协褌邪锌
    : 袨褌屑械薪邪 屑械卸写褍薪邪褉芯写薪芯谐芯 褋褌邪薪写邪褉褌邪 [95.99]
  • 袙械褉褋懈褟
     : 1
  • 孝械褏薪懈褔械褋泻懈泄 泻芯屑懈褌械褌 :
    香港六合彩开奖/TC 174
    ICS :
    39.060 
  • RSS&苍产蝉辫;芯斜薪芯胁谢械薪懈褟

袞懈蟹薪械薪薪褘泄 褑懈泻谢

袩芯褟胁懈谢懈褋褜 胁芯锌褉芯褋褘?

袨蟹薪邪泻芯屑褜褌械褋褜 褋 FAQ

袪邪斜芯褌邪 褋 泻谢懈械薪褌邪屑懈
+41 22 749 08 88

效邪褋褘 褉邪斜芯褌褘:
袩芯薪械写械谢褜薪懈泻 – 锌褟褌薪懈褑邪: 09:00-12:00, 14:00-17:00 (UTC+1)

  2. 袠薪褌械褉薪械褌-屑邪谐邪蟹懈薪
  3. 袣邪褌邪谢芯谐 褋褌邪薪写邪褉褌芯胁
  4. 袦袣小
  5. 39
  6. 39.060
  7. 香港六合彩开奖 11427:1993