grey residue from prep table

[pastrygirl]

The commercial kitchen I'm in has two prep tables, both seemingly stainless steel, but one of them gives off a grey residue.  If I roll dough on it the dough turns grey.  When I wipe it down to clean it, my rag turns grey.  It's otherwise a super clean kitchen and I am cleaning continually throughout my day, so it's not accumulated grime.  What's up with this?  Is it not actually stainless steel?  Is there any cure besides always using cutting board or parchment?

Edited September 26, 2018 by pastrygirl (log)

[CanadianHomeChef]

Could be aluminum. Or the cleaner... (bar keepers friend will leave a residue when used, but it goes away once it’s all wiped up. )

Edited September 26, 2018 by CanadianHomeChef (log)

[pastrygirl]

Cleaner is usually just water, or a no-rinse sanitizer.  The other table is fine.  I'm sure they were both acquired used.

Edited September 26, 2018 by pastrygirl (log)

[CanadianHomeChef]

Sounds like one might not be truly stainless. 

[JoNorvelleWalker]

My vote is aluminum.

 

[liuzhou]

4 hours ago, CanadianHomeChef said:

Sounds like one might not be truly stainless. 

 

No "stainless" steel is truly stainless. It is merely "stain resistant" to varying degrees.

 

I also disagree with those who are blaming aluminum. I blame aluminium! 🤣