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Estano ennegrecen

¿Los restos de estaño se ennegrecen? y en caso contrario como lo podria solucionar.

Jose Luis Verdu Giner
- Ibi(Alicante), España
2002

Los restos de estaño (tin residues) no se ennegrecen (do not blacken). Si esto sucede es poque no es estaño puro (If they do its not pure tin). Solucion: Tin Bright dip (inmersion brillante para estaño).

Guillermo Marrufo
Monterrey, NL, Mexico
2002

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