Review on Optimize Your Mixing Ratios with Custom Shop's Calibrated Solutions by Amy Cook

They weigh over 32 oz making it easy to mix a full 32 oz. The measurements on the page are easy to read although I'm confused they listed an ounce but half that amount off it (not sure what that measures). Containers can be tricky to separate, but here's a tip. Instead of pulling one from the top (I did and the rim tore). Separate the bottom part by inserting your fingers in between and wringing out the bottom part. Works perfectly. My tops fit great. They said there were fewer lids (6) than containers (18). This suits me as I mix resin and don't need tops. The resin comes out easily and I can reuse it. Bonus! The price was way better than the ones I bought at the hardware store! Almost half the price. And they are transparent, so it's much easier for me to see my transparent resin to measure! Now I want to find smaller ones to make mixing small batches easier.