How does Canon clean sensors?

Does anyone know how Canon service cleans sensors? I know their manual recommends only a dry method (blower), but I didn't know if they did it differently (wet?). You know "Do as I say, not as I do."

I have a few stubborn particles on my new 5D sensor I was not able to remove with a blower. They didn't budge. I sent it to Canon for cleaning, camera was returned to me, and a portion of those particles are still in the very same place, unmoved. I assume they did a test shot, because the file numbering on my CF card jumped from 200 to around 9000 (based on "continuous mode" file numbering system, meaning they did pop a CF card of their own in my camera and did a test shot or two).

I don't mind having a few dust spots on my sensor, it's normal. But I do want to make sure that any spots that didn't move after a Canon cleaning aren't permanent, as I have heard of a few instances of dust under the AA glass over the sensor.

Is this the reason so many go the wet cleaning route at home?

I'm not sure how Canon does it, but it seems I've heard folks mention that they have done a 'wet' cleaning method. Only hearsay though....

MotifOne wrote in post #2665436
Is this the reason so many go the wet cleaning route at home?

For me, I clean my sensor @ home using the copperhill method, because it's easy when done very carefully, and I also don't have to wait over a week for someone else to do it. And I've often heard that people have their bodies returned to them with a sensor just as dusty as it was when it was sent off to Canon to be cleaned.

When I do it, I will swipe it two or three times in one session, and all is done less than half an hour. (15 minutes of that is preparing the "cleaning room" (my bathroom) with steam from the shower and waiting for the air to clear out)

Works like a charm.

WT

I know 12 months ago they were using Lenspens.

I wonder if they will be using SCK-E1s soon (or now even)?

I have read in several articles that they use the Lenspen products!

I just bought quite a few Lenspen products and love them, they really work well! Easy to use, safe, excellent results.

I bought from this Canadian company. They shipped fast and they emailed me personal service, so I recommend them without hesitation, as well as their products. Their monitor cleaner keeps my monitor cleaner than it has even been and it is so easy to use!

Oops, forgot to add the link:

http://www.lenspen.com​/

I asked them when the cleaned mine, apprently Canon NZ use a wet method, looking through a special scope (which might just be a lupe) so they can see the sensor easily.

thanks guys.... i'll look into these approaches.

the steam room idea is pretty clever