Ah thats what I was wondering, because I saw a lot of pictures that do not meet that criteria 100% either and wondered how they got accepted.

Can I manage 100% white with a better light setup or will I always have to do some photoshopping?

I'm having some ideas for macro/product photography shots that have to do with my day job (dentist) and I was wondering how I managed best the isolation.
I would like these shots to be accepted at SS as well.

I know how to work the PS Pen-Tool but I can also manage a decent white background using a white underground from vinyl that was not really cheap and that I can still return.

Using the background I can manage a relatively white background around RGB 230, and I can save myself the PS troubles, but I cannot guarantee 255 in all places.

I have seen some shots on SS with a perfectly white BG in all places, but others do have a little greyish tint here and there just like mine.

So my question is, do I use that pricey background, or will I have to cut out everything anyway with the consequence that it doesn't really matter what background I use?

Thanks for your input!

Best Regards