Wonderfully colorfully done. I wish they were more centered in the frame... or even less centered, so it doesn't seem like an accident. Perhaps a bit of crop off the right to match the space on the left?
It's a solid nine as it is, though. I like it.
This is a good clean shot with a simple yet effective layout. The different colours add visual interest and I can tell you have an eye for details as even the markings on the test tubes are uniform :) The decision not to include the bottom of the test tubes could be seen as a bit of a gamble but I think it works for this shot as its all straight lines and uniform precision. Can't really fault anything here except that it leaves me a bit hungry and wanting a bit more to be going on. 8 from me.
nice use of repeating shapes and colors to meet the challenge - i am generally not a big fan of colored water for chemistry and science type shots - but it fits here and is well delivered
I love the colours you have managed to capture in this picture. Only negative commet is that you could/should have dusted the tubes before you pressed the shutter release.