What are the recommended ways to (a) clean/sanitize stainless steel and (b) if necessarry passivize the stainless steel after the treatment?
While there is a question asking about "Cleaning stainless steel", this question, despite its title, is rather "how to revocer/repair a damaged stainless steel".
What I would like to know is:
- what chemicals to use for cleaning (detergents and sanitizers)
- what chemicals to avoid (to not deteriorate the stainless steal)
- what tools to use / to avoid (i.e. are "abrasive cleaning pads" a no-go, as they scar the surface)?
- when/is re-passivation of the stainless steel necessary?
To give some background to the question here some background:
My brew-setup (pots, fermenters, valves) consists of stainless steel alloys which I want to clean, i.e. remove also not eye-visible biological agents (in order to avoid contamination. Even though my setup is stainless steel alloys of the 300 series, it might be necessary to follow up any cleaning agent, with a passivating, re-passivation step, as to not risk the anti-corrosive attribute of the stainless steel.