From: '''newspam'''@nezumi.demon.co.uk   
      
   On 18/09/2017 13:14, Dean wrote:   
      
   > On Saturday, September 16, 2017 at 7:17:42 AM UTC-4, Tracy Chan wrote:   
   >> Why are glassware for metal analysis cleaned in acid bath before use?   
   >   
   > An acid bath removes any residual metal contamination.   
      
   It is surprisingly tricky to clean things to ultra trace detection   
   limits these days as the instrumentation has become ever more sensitive.   
      
   Even nominally pristine glassware has traces of metal ions that can   
   leach from the glass if you have an ICPMS with sub ppt detection limits.   
      
   https://link.springer.com/article/10.1007/s10967-012-2301-1?no-access=true   
      
   --   
   Regards,   
   Martin Brown   
      
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