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Location: Waterford, Ireland
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Autoclave cleaning

09/27/2010 4:52 AM

I have a problem that needs to be resovled for a customer. We have a large autoclave in a hospital and as the chamber is very stained and unsightly. I need to get this chamber clean again but not sure of the best method to use. Any suggestions. Stainless stell chamber. I used pickling paste previously but this is a barbaric method to be honest as pickiling paste is seriously dangerous and the fumes are dangerous and nasty smelling. If you can suggest any method that will work for me then I would be very grateful .

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#1

Re: Autoclave cleaning

09/27/2010 7:52 AM

#0000 steel wool?

Automotive rubbing compound with a buffer?

What do the stains consist of?

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#2
In reply to #1

Re: Autoclave cleaning

09/27/2010 8:12 AM

Steel wool scores the material and is unacceptable to use. The staining is caused by water bourne solids etc. Some iron staining from the hospital pipework. Chemicals are too dangerous to use because of toxic fumes. I heard of dry ice blasting which does not score the metal but it is expensive, I am sure.

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#3
In reply to #2

Re: Autoclave cleaning

09/27/2010 8:43 AM

I don't know how big this thing is, but I'm still leaning toward some kind of polishing compound with a buffer and some elbow grease. They do have a mild odor, but I don't think toxic fumes would be involved.

Check this out, http://www.ssina.com/download_a_file/cleaning.pdf. I didn't think of TSP, (trisodium phosphate), not real harsh, and a good cleaner. This pdf lists many options. Good luck!

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#4
In reply to #3

Re: Autoclave cleaning

09/27/2010 8:51 AM

Appreciate your help. I have no problem with using elbow grease but would need to make a test clean first I suppose. Dimensions are approximately 30" diameter of square door and 48"deep. Some smaller also and a few bigger. I will look up ssina, thanks. Literature is helpful thanks.

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#5

Re: Autoclave cleaning

09/27/2010 10:18 AM

If your location is susceptible to hard water, i.e., calcium and magnesium ions, Simple Green or Lime Away may work, but without experience in the medical field I'm not sure if these are suitable for exposure to your instruments.

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#6

Re: Autoclave cleaning

09/27/2010 2:53 PM

I find it interesting that a client cares how the inside looks at all. The client does realize that "looks" do not affect the ability for the autoclave to work correctly, right? To me, it is like wondering how to clean a grass stain that is in-between two treads on the bottom of my shoe...after all, in-between the treads of my shoe need to be clean to work best as a shoe, right?

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#7
In reply to #6

Re: Autoclave cleaning

09/27/2010 4:37 PM

Most of our clients are professionals and realise that surface dirt can transfer to external sheet of wraps and this in turn can affect the integrity of the wrap. Rust and other dirty particles propelled at speed and pressure and exposed to vacuum in the vicinity of paper wrap is a little more important than grass stainsd on somebody's shoes..... dont you think?? This is also carried through to theatre which as anybody who knows anything about sterility can tell that it is undesireable. The external mechanical barrier is as important as the internal wrap. It is not looks but cleanliness which is at stake.

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#8
In reply to #7

Re: Autoclave cleaning

09/27/2010 5:01 PM

Well the autoclaves I am familiar with sterilize everything inside the autoclave, and you only said "discoloration" - you did not say rust and dirty particles. Yes I agree to clean out rust and dirt even though they are 100% clean. As far as discoloration that does not impart particles to the clean product, it should not matter.

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#9
In reply to #8

Re: Autoclave cleaning

09/27/2010 5:16 PM

It's a hospital!!! The way things look matter!! Leave it alone. WTF

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#10

Re: Autoclave cleaning

09/27/2010 6:21 PM

Kram a rat - Thx for kicking that guest to the curb! Hospitals are inspected and who wants to get written up for appearing to have dirty equipment!

OP - Sometimes an autoclave won't reach the right temperature and RH (for example steamed at 125 C deg) in the allotted time. If that happens then some spores could germinate and some metabolisms of said germination could change the color of certain pH balanced mediums. I'm not sure about SS but please check the temperature and/or RH inside with auxiliary probes to make sure you don't have a systemic problem!!

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