If you're new to rosin press extraction or just looking to optimize your results, one of the most important decisions you'll make is choosing the right micron size for your filter bags. The micron rating determines how fine or coarse the mesh is — and it directly impacts the quality and yield of your extract.
At Pressdeals, we offer six micron sizes: 25, 73, 90, 120, 160, and 220 microns. Here's everything you need to know to choose the right one.
What Is a Micron?
A micron (µm) is a unit of measurement equal to one millionth of a meter. In the context of filter bags, it refers to the size of the openings in the mesh. The smaller the number, the finer the filtration — meaning fewer particles pass through, resulting in a cleaner but potentially lower-yield extract.
25 Micron — Ultra-Fine Filtration
The 25 micron is the finest filter in our lineup. It captures even the smallest plant particles, producing an exceptionally clean and pure extract. This comes at the cost of yield — less material passes through — making it ideal for users who prioritize quality above all else.
Best for: Ultra-pure , fresh frozen flower, finely ground material, premium single-press extracts
73 Micron — Fine & Precise
The 73 micron is a fine-filtration option that delivers a clean, high-quality extract while allowing for better flow-through than the 25 micron. It's a great choice for flower rosin and hash pressing when quality is the priority.
Best for: Flower rosin, premium-quality extracts, users prioritizing purity over yield
90 Micron — Balanced Performance
The 90 micron sits right in the middle — offering a great balance between filtration quality and yield. It allows more material to pass through than the 73 micron while still producing a clean extract. A versatile choice for a wide range of applications.
Best for: Flower rosin, herb and plant pressing, extractors who want quality without sacrificing output.
120 Micron — Maximum Yield (Our Best-Seller)
The 120 micron is our most popular filter bag. With the most open mesh in our lineup, it delivers maximum yield and fast flow-through — perfect for high-volume extraction, brewing, and general filtration. If you want to get the most out of every press, this is your go-to.
Best for: High-yield rosin pressing, large batches, commercial and high-volume extraction
160 Micron — Coarse Filtration for High Output
The 160 micron features a coarser mesh that allows for very high flow-through rates. It's ideal for applications where speed and volume matter more than ultra-fine filtration — such as pressing dry material, or for pre-filtration steps in multi-stage extraction setups.
Best for: Dry material, pre-filtration, high-throughput industrial applications
220 Micron — Maximum Flow, Coarsest Mesh
The 220 micron is the most open mesh in our lineup. Designed for applications requiring maximum flow and minimal restriction, it's best suited for coarse pre-filtration, large-particle separation, or specialty industrial uses where fine filtration is not required.
Best for: Coarse pre-filtration, large-particle separation, specialty industrial and brewing applications
Quick Comparison Chart
| Micron | Filtration | Yield | Best Use |
|---|---|---|---|
| 25 µm | Ultra-fine | Lower | Cold-water hash, pure extracts |
| 73 µm | Fine | Medium | Flower rosin |
| 90 µm | Medium-fine | Medium-high | Herb pressing, essential oils |
| 120 µm | Standard | Maximum | High-volume, brewing, infusions |
| 160 µm | Coarse | Very High | Dry material, pre-filtration |
| 220 µm | Very Coarse | Maximum | Coarse pre-filtration, large-particle separation |
Still Not Sure Which to Choose?
A good rule of thumb: if you're pressing flower and want the cleanest result, go with 25 or 73 micron. If you want maximum yield and fast processing, the 120 micron is your best bet. The 90 micron is a great all-rounder if you're still experimenting. For kief or coarse pre-filtration, the 160 or 220 micron will give you the flow and output you need.
Have questions? Feel free to reach out — we're happy to help you find the right filter for your setup.