To our valued customers,
Monday is the day:
Beuth Verlag will become DIN Media.
You can find out more about our new name and the reasons behind it here.
We ask for your understanding that, due to this change, we will be temporarily unavailable on Sunday. It will also not be possible to place any orders on Sunday.
But we will be there for you from Monday onwards with our new name.
Yours sincerely,
Beuth Verlag
Technical rule [CURRENT]
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This Technical Specification specifies a test method for determining the presence of organotin compounds. This test method is applicable to all types of footwear materials. The organotin substances are extracted from the footwear material with a methanol-ethanol mixture, in a medium-strength acidic condition, using tropolone as a complexant agent. The polar and high-boiling organotin is then converted to the corresponding volatile tetra-alkyl derivative, by reaction with sodium tetraethylborate. Finally, it is detected by a gas chromatograph fitted with a mass selective detector (GC-MS). The test method is intended to be used by footwear manufacturers, footwear retailers, supervising authorities and independent test laboratories. The committee responsible for this Technical Specification is NA 062-04-52 AA "Schuhe" ("Footwear") at DIN.