I don't know what the "pure" stands for, but the composition is lovely and certainly meets the challenge. (If it was mine, I'd probably hide the printing and just go with form and texture. But it isn't mine, it's yours and nicely done.
Good quality of light - and of a hairy/mouldy kind of texture to those things in that tube. Compositionally pretty strong too. Somehow the tube seems to be your subject, and yet not really the thing that has texture - I don't get a convincing feeling of texture from it.