Editor's note: This article has been reviewed and updated for accuracy in 2026. There are a lot of different methods that have been developed and used to extract cannabinoids (the chemical compounds that naturally occur in the cannabis plant), and rosin is one of the latest techniques. This process involves using heat and pressure to separate cannabis plant matter from cannabis oil, and in order to do this, a rosin micron bag is used. What is a rosin micron bag? How is it used? To find the answers to these questions and more, keep on reading. If you already know all about rosin extraction and you're just looking to restock your bag supply, below are some of the best micron bag brands of 2024: [wptb id=4359] If you’ve ever played a violin, viola, or any other stringed instrument that is played with a bow, you’ve probably heard the word “rosin” before. That’s because originally, the process that is used to extract rosin from the cannabis plant was used to create the rosin that is applied to a bow to create friction, allowing the bow hair to grasp the strings of the instrument so that the strings vibrate clearly when the bow passes over them. Initially, rosin was made of sap that was extracted from trees, and heat and pressure were used to extract the tree sap. A pure and powerful concentrate, on average, rosin contains more than 80% THC. It first became famous by Phil “Soil Grown” Salazar, a marijuana expert who promoted the use of rosin in 2015. Since then, it has become