 Welcome to BCH Technologies. This is Kevin. In previous few videos, we showed how to refill original HP cartridge, as well as how to make a sponge and a sponge-less refillable cartridge. Today, we're going to test how many pages each method can print in each refill. Before we start, we have mentioned that we use BCH test page. You may have seen HP says how many pages a cartridge can print. The HP's number is based on a test page called SOIEC 24712 2007 test page. If you've seen the test page, it simulates a regular document, and thus doesn't use much ink. For Excel, we get a 480 ISO page, we divide it by 1.9, and that's 252 pages. If we use this 63 Excel cartridge to print the BCH test page, we probably will be able to print 252 pages. For the first test, we try the regular 63 cartridge. Those starters and regular cartridges, by regular I mean not Excel cartridges, they all have a smaller sponge, so it doesn't hold much ink. So we just inject ink into the sponge, and did a little bit of unclogging, and it's ready to go. You can check the YouTube video for detailed process. After this is done, we're going to compare the refillable cartridge. We put a green tab for each 50 pages printed. We finally run the ink at 97 pages, which is about 185 ISO pages, and compare this result to HP's spec, which black and colors are supposed to print between 165 to 198 pages. So when we refill a regular cartridge, your printout number is pretty similar to a new cartridge. For the second test, we did some surgery. We made a sponge refillable cartridge by cutting open the cartridge, and replace the small sponge with a bigger one. You can check out this link for a detailed procedure. Eventually, we printed 269 pages, which is about 511 ISO. So when we check the XL cartridge, XL can print about 300 to 500 pages. So our result is pretty much in the ballpark with XL cartridge. For the final test, we get rid of the sponge and install a special cover with air pressure regulator. Now the cartridge is a spongeless cartridge, and we can use the whole cartridge to hold the ink. You can check out this link if you know how we did it. Eventually, we printed 407 pages, which is about 770 ISO pages. So if we go back to the HP specifications, we can see a spongeless cartridge is 60% more than the XL version of the cartridge. If we compare the spongeless cartridge to a regular cartridge, spongeless cartridge can print four times of a regular cartridge. So it's three times more than a regular cartridge. I hope you enjoyed this video. Visit us at bchtechnologies.com or locally at Greensboro, North Carolina. Thank you. Happy printing. Cheers.