Apart from a glitch with the seller (see; asin = isAmazonFulfilled = 1 & isCBA = marketplaceID = A1PA6795UKMFR9 & seller = A2MLDC0I8BKCCP), the cartridges do not meet just the expected finger-clean capability. I had (and have not yet empty) taken in order to test the colors (with a reference image) all the cartridges from the printer and newly replaced with these cartridges. Especially the normal cyan, but also Magenta have been poured on my fingers when I freed the cartridge from the cap, although I kept the cartridges with the sponge side up.
The result of the printed photos is exactly the refills - which in turn brought the original inks indistinguishable results. If you only rated this fact, it would be so for users who are not afraid that your printer is damaged due to the cartridge-flooding and gloves worth even 5 stars.
Since the manufacturer's original cartridges when inserting free from defects, I can forgive only 1 point in the handling. On average, ie 3 points.