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#42 |
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#44 |
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#45 |
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"An old method of removing gunk from laboratory glassware was to swirl sand around inside it."
I have a book about household management written by a butler who buttled for the gentry for decades. To clean wine residue and gunk from decanters, he recommends pouring the shot from a shotgun cartridge into the decanter and swirling it with water. I suppose sand would do if you did not have access to shotgun toting aristocrats. |
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#46 |
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"An old method of removing gunk from laboratory glassware was to swirl sand around inside it." |
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#48 |
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#49 |
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Well I wonder what the physics/chemistry of that is then? I can see it working on an aluminium pot by reaction with the pot, but have no idea why that would work on stainless steel. I thought that it might work by reacting with the burnt bits rather than the pot itself. this site doesn't explain it but does use a similar method http://www.apartmenttherapy.com/how-...ng-pans-140547 this one suggests using a reaction between vinegar and bi-carb ** one of the Infinite monkey shows one of the scientists says "I don't know" is one of the most common things scientists say. I like it. This should not be taken to imply I am a scientist of have any hope of knowing at all, anything. I'll just go clean and fill a water dish then ... |
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#50 |
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#52 |
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this one suggests using a reaction between vinegar and bi-carb "Ooooh look lots of froth it must be real powerful magic" What is the result of this reaction? I know CO2 in the froth but anything else useful? |
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#53 |
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You see this all the time on the "alternative ways of cleaning things" articles, not sure what neutralising your cleaning vinegar with bi carb would do apart from lots of froth. |
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#54 |
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#55 |
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You see this all the time on the "alternative ways of cleaning things" articles, not sure what neutralising your cleaning vinegar with bi carb would do apart from lots of froth. On the stainless steel issue though, I have been thinking about possible reactions with the bicarbonate paste and it occurs to me that the inert nature of stainless steel is due to a fine film of chromium oxide on the surface. This film could react with an alkaline reagent, which would include not just the bicarb paste, but dishwasher detergent as suggested by Ilago. This link from an appliance manufacturer supports that view I think in that they say caustic reagents will remove the oxide film. Their mention of sodium bicarbonate as a cleaning agent seems to involve using it as a mild abrasive though as they talk of agitation. |
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#57 |
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The acetate solution is only a buffer if you have added enough vinegar that about half of the acetic acid reacted with the bicarbonate and the other half is still in solution. Another thought is that the carbon-like film might have a few dangling hydroxyl and carboxyl groups that might react with an alkaline reagent, leading to disruption of the structure of the the deposit. |
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#58 |
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That might be hard to achieve in practice. Ultrasonics will do it. Thus there may be something in the fizz bomb. |
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#59 |
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Use the boiled water but add liquid detergent to it. If that leaves some, then get some (sorry Aunty) Gumption, the paste cleaner for such applications. You may need to go to a Hardware store for it.
I usually put about 2cm of water in my pans, get it boiling, turn the heat off and then some dishwashing detergent and leave overnight to help soften and soak off burnt on bits. |
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#60 |
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Use the boiled water but add liquid detergent to it. If that leaves some, then get some (sorry Aunty) Gumption, the paste cleaner for such applications. You may need to go to a Hardware store for it. |
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