Here is a short guide for you to clear your confusion about rosin bags.
What are Rosin Bags?
Rosin bags or rosin filter bags are pouches to hold cannabis while they are being pressed in between the heated plates of a rosin press. The presence of a rosin bag can effectively control the potency and the quantity of rosin squeezed out during the process of extraction. The barrier it provides between the source material and the extracted oil acts as a filter and decontaminates the end product from any impurities.

How to Use Rosin Bags
Using rosin bags is no rocket science, but there are some things you should be wary of while using them in order to get the most optimum yield possible.
Step 1: Check if the stitches of the bag are on the inside or not. If outside, you will need to flip them inside to start the process.
Step 2: Prepare the cannabis in a way that there are no bulky stems present.
Step 3: Fill the rosin bag with the help of a rosil funnel and keep at least half an inch of space empty towards the top.
Step 4: Use a pre- press mold to maximize the yield.
Step 5: Seal the top of the bag with a fold.
Material of Rosin Bags
Food- grade nylon makes for the best quality of rosin bags due its stretchability and heat resistant properties. Two other materials often used for rosin bags are metal and silk. But as you can tell, metal is not the right choice owing to its rigidity. And with silk, the risk of blowouts increases considerably. So the ideal choice for rosin bag material becomes nylon which is durable, flexible and less susceptible to causing blowouts. It has to be ensured that the nylon is food grade as well to avoid any kind of health hazards.

Size of Rosin Bags
To put it in a plain way, the size of your bag should match the size of the heated plates of your rosin press. Make sure that the rosin bag you are using fits comfortably in between the plates without seeming overstuffed. Bags of 2”x 4.5” dimension should be good enough for a few nugs.
Micron and its significance
Micron is a unit of measurement that refers to 1/1000th of a millimeter. This unit is used to measure the size of the cannabis particles that seep out of the tiny pores of a rosin bag. The smaller the size of the extracted material, the fewer the microns and the more refined is the end product.
The range of microns for rosin is generally 15- 120 microns. However, the choice for micron in case of rosin bags will depend on the kind of source material you are using as it differs from one material to another. For instance, if you want to use cannabis flowers as your source of rosin, opting for 120 microns is the ideal choice. But hash, on the other hand, requires finer pores in the rosin bags to extract particles close to 15 microns.
To sum it up, use 90- 120 microns and above for flowers, 25- 75 microns for dry sift and 15- 37 microns for bubble hash. The bottom line is that the smaller the microns, the better and purer is the yield considering the range for each source material is correctly maintained.

Can Rosin Bags Be Reused?
It is highly recommended to not reuse a rosin bag as it surges the chances of a blowout leading to the waste of good source materials. Once heat and pressure are applied to a rosin bag, its structure materials are compromised and it just does not work as well as it did the first time. This will result in the extraction of yields with visible bulks of the source. Besides, the rosin bags also lose their filtering properties once used, giving out extracts that might contain several contaminants.

Benefits of Using Rosin Bags
While buying accessories for extracting rosin might seem unnecessary, the benefits of rosin bags will drive you to reconsider.
- Rosin bags hold your cannabis in place while pressing.
- The fine threading of the fabric acts as a filter to decontaminate the extracted product.
- It helps to preserve the consistency of the extracted product due to the presence of the evenly distributed fine pores on the fabric.
- Allows to keep the extracted rosin separated from the source material.
- It will optimize the yield of rosin by giving out more potent products.
- Rosin bags also help to control the dosage of the source material.
- If the right material is used, it helps to prevent any blowouts.

Conclusion
Now you know everything there is to know about rosin bags. If you are looking for a way to achieve a purer and better quality of rosin, remember to choose the right rosin bags that match your needs. While you do so, it is crucial to correctly select the size of these bags that fits your press perfectly. Also, even though the smaller microns ensure the finer quality of rosin, do not forget to choose the micron that is best suited for the type of source material you are using.