Review on Efficient Resin & Mineral Tank Filling Funnel - 2.5" x 10" for Optimal Performance by Angie Johnson

I wanted a funnel that I could use to pour various dry materials into some of the 5 gallon plastic pitchers that I have. It should have an opening wide enough for me to pour something out of heavy, bulky bags into the funnel without spilling them. I also wanted the pour spout (below) to fit the necks of the jars I was planning to fill - small enough to fit but large enough to allow for a reasonable flow rate. I've used it for cat litter, bird seed, sand, cement and other things. This works great for everyone. I don't know anything about "resin and mineral containers".