02-21-20

» The Ultimate Guide to Choosing the Right Micron Bag for Flower Rosin Extraction

When extracting flower rosin, selecting the correct micron bag is one of the most important decisions to ensure the highest quality and yield from your material. The micron size of a rosin bag refers to the size of the pores or tiny openings in the bag that filter the material, determining what gets through during the pressing process. Using the right micron bag helps prevent plant material from contaminating your rosin while ensuring optimal resin flow.

This guide will walk you through the key considerations for choosing the correct micron bag for flower rosin, so you can achieve the perfect balance between purity and yield.

What Are Micron Bags?

A micron is a unit of measurement that describes the size of openings in the filter material used in rosin bags. A smaller micron count means a finer filter, allowing less plant material through, while larger micron sizes allow more material to pass through. Micron bags come in a range of sizes, from very fine 25 microns to much coarser 220 microns. The key is finding the right balance depending on your starting material and the type of rosin you want to produce.

Why Micron Size Matters for Flower Rosin

When pressing flower rosin, using the correct micron size bag has a significant impact on the quality, yield, and texture of the final product. For flower rosin, most extractors recommend using bags between 75 to 160 microns, depending on the specific goals for the extraction.

  • 90 Microns is the most commonly recommended size for pressing flower rosin. It strikes an excellent balance between allowing enough resin to flow through while blocking unwanted plant matter. This size offers good yield and high-quality rosin without compromising purity.
  • 75 Microns is a slightly finer option that produces cleaner rosin but may sacrifice a bit of yield. Some users opt for this size when purity is prioritized, although the yield can be slightly reduced compared to larger micron bags.
  • 120-160 Microns are larger sizes that focus more on yield, allowing for a larger volume of material to pass through. These bags are great if maximizing yield is your primary goal, but they might result in a slightly lower purity due to the inclusion of some plant material.

Which Micron Size Is Best for Flower Rosin?

The ideal micron size for flower rosin typically depends on your goals. If you prioritize quality and cleanliness, smaller sizes like 75 or 90 microns are excellent choices. On the other hand, if you are focused on higher yield and are okay with a bit more plant material in the final product, larger sizes like 120 or 160 microns could be more appropriate.

For example:

  • 90 Microns: Best for a good balance between purity and yield, commonly used by both beginners and seasoned extractors.
  • 120-160 Microns: Ideal if you’re looking to extract a higher yield and don’t mind some minor impurities from plant material.
  • 75 Microns: Best for the cleanest possible product, sacrificing a bit of yield for higher purity.

The Role of Flower Material and Micron Size

Different strains and even the quality of the flower material can affect the choice of micron size. For instance, flowers with a higher trichome content will yield more resin, and the finer micron bags will help you retain the maximum purity. However, if the flower is dry or low in resin content, using a larger micron size might help boost yield without losing too much of the essential oils.

Micron Size and Yield

It’s important to note that smaller micron sizes typically result in lower yields, but the rosin will be of higher quality with fewer impurities. Larger microns increase the yield but can result in a greener product, as more plant material may pass through the filter. For many extractors, finding the right micron size is a matter of striking the right balance between these factors based on the specific needs of the rosin extraction.

Other Key Considerations for Flower Rosin Extraction

  1. Moisture Levels: When pressing flower rosin, it is crucial to have the right moisture content. If your flowers are too dry, the resin may not flow properly, negatively affecting yield. Ideally, flowers should have a humidity level between 55-62% to optimize rosin flow.
  2. Pressure and Temperature: Another key factor in flower rosin extraction is pressure. Flower rosin requires a bit more pressure than other materials like hash or kief, but too much pressure can result in unwanted oils and plant material getting into the final product. The ideal pressure is between 1000-2000 PSI at the plate, and temperatures between 180°F and 220°F work best for flower rosin. Cold pressing at lower temperatures can preserve more terpenes, but may also result in lower yields.
  3. Use of Pre-Press Molds: To maximize efficiency and ensure even pressure during the press, many extractors use pre-press molds. These help pack the flower material tightly into the rosin bags, which leads to more consistent extractions and better rosin yields.

Tips for Choosing and Using Micron Bags

  • Always choose high-quality nylon rosin bags, as these provide the best resistance to heat and pressure. Food-grade nylon is generally the most durable and reliable material for micron bags.
  • Experiment with different micron sizes to find what works best for your particular strain and preferences. Some strains may yield better results with larger microns, while others may benefit from finer filtering.
  • Double-bagging can help prevent blowouts, especially when working with finer microns. Some extractors use a second bag with a larger micron count for added structural support.

Conclusion: Choose the Right Micron Bag for Your Goals

To get the best results when pressing flower rosin, it’s essential to choose the correct micron size based on your desired balance of yield and quality. Whether you opt for 75, 90, 120, or 160 microns, understanding how different micron sizes affect the final product will help you achieve the best possible rosin extraction.

For most extractors, 90 microns is a great starting point, offering an excellent balance between yield and purity. However, experimenting with different sizes is encouraged, as personal preference and the characteristics of the flower you’re pressing will also influence the final outcome. By selecting the right micron bag and optimizing other factors like pressure and moisture, you can produce top-quality flower rosin that meets your specific needs​.

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