klum - did you look carefully, with a magnifier and bright light? One day is usually long enough to get at least some deposits. It is not clear whether the deposits really are mostly carbon based, although that's what they look like. What are the ingredients?
Look at the pic that was posted of the after photo of the atomizer? My understanding on reading the topic was that it was black to begin with, then became whitish after. I'm only a user of the product, definitely not a chemist, so I'm not sure what chemicals react with what. I do know that our pans get baked on carbon deposits that this stuff removes. I don't have any atomizers that are that bad or that I would like to take apart (only have 2 right now and would hate to kill one). Just thought that I'd throw this out as a carbon remover. At least you know it washes out completely and is safe. Whether it works for this type of buildup is unclear since there is no clear notion of exactly what the build up is.
Here's from the MSDS sheet:
Chemical Name/Common Name: CAS No. PEL TLV
*METHYL ALCOHOL 67-56-1 200 PPM 200 PPM
*DICHLOROMETHANE 75-09-2 TWA 500 PPM 25 PPM
*AROMATIC HYDROCARBON 108-88-3 TWA OF 100 PPM (375 mg/m3) TWA OF 50 PPM (147 mg/m3)
ETHANOL 64-17-5 1000 PPM 1000 PPM
ETHANOL, 2-BUTOXY 111-76-2 25 PPM 25 PPM
AMMONIUM HYDROXIDE 7664-41-7 50 PPM 35 PPM
Here's instructions: similar to what many of the tests have done:
Leave CARBON-OFF! ® on appliance for 15 minutes or as long as 5 hours, depending on the thickness of carbon grease build-up. Leave overnight if convenient. Test with small wooden stick to see if carbon is completely loose, DO NOT SCRUB! When carbon is completely loose, wash under cold water tap using a bristle brush or ScotchBrite pad. CARBON-OFF! ® will not harm any metal surface, brick or glass no matter how long it is left on. CARBON-OFF! ® may also be used to clean the inside of appliances. Before using appliance be sure to wash thoroughly with warm water and soap, then rinse thoroughly with potable water.
NOTE: Do Not Use On (or place appliances to be cleaned on) painted surfaces, acrylics, corian sinks and counter tops, analon surfaces, calphalon or teflon non-stick pans.
kevin