I swept the inside of the stove into the ash pan. I also tapped lightly on the pipe and removed the t-cap and dumped what was in the cap into the ash pan. I shifted out any loose pellets with a 3/16 screen into the mason jar for volume photo. Then I dumped the mason jar into a ziplock bag and weight the ash. Scale was tared fpr ziplock bag weight. Way too hot to burn anything now, But in the fall We can start a new thread with our new test results. Is this how we check pellet density?? I have ordered a 12"x12"x12" box(1 cubic foot). I will fill the box with pellets and weight the filled box. This will give us the volume measurement some are looking for. 1 bag of the dense pellets will fit in the box with room to spare. I will add some from the 2nd bag to fill the box. If a bag wills the box and the isn't room for all the pellets, Then this is a less dense pellet. I am just checking to see if all agree on checking the density of the pellet brands? I would say we want the whole bag plus. The bags that don't fit are the pellets that aren't going to produce great heat. But they may burn a little longer than the dense pellets. Next would be overall burn time(how long each or both bags burn for). Just trying to cover all the base's. Anything else we need to check?????