Rosin is a solventless extraction made through the mechanical process of applying heat and pressure to “press” out the terpene and cannabinoid rich resin from cured flower, sift and kief. This process occurs near instantaneously and requires virtually no professional expertise in the field of botanical extractions. The art of extracting Rosin uses heat to melt the glandular domes of the trichrome off of the base material. This resin rich sap will then reconstitute on the parchment paper, ready for collection. After scraping the parchment paper, the waxy residue collected will be clean and ready to dab.
This is another question we get often, but cannot ever provide an exact answer. Basically the term “Garbage in, Garbage out” is a FACT with pressing. Rosin will typically taste very much like your starting material smells so using the best material available is always recommended. We have seen results as low as 5.5% with low quality material and have also seen 31%+ with Grade “A” material. Your best bet is to press a couple of .8g test bags to see what you can expect from your material before loading your extraction bags.
Yields range significantly and depends largely on the quality of the materials used. Great material in = terrific rosin.
- Trim: 3% - 8%
- Shake: 8% - 15%
- Flower: 15% - 30%
- Kief / Dry Sift: 30% - 60%+
- Bubble: 30% - 70%+
Note: Adequate application of pressure is important to achieve optimal yields and these figures are based on averages we have tested using properly packed rosin bags. Results may vary and depend heavily on your material as well as the skill of the rosin press operator.
For kief, dry sift and bubble, use a 36 micron or 72 micron bag. 72 micron rosin bags will offer higher yields compared to 36 micron rosin bags, but the 36 micron bags will provide the highest quality product.
For flower, trim, and shake, use a 115 micron or 90 micron bag. You will get the highest yield from a 115 micron rosin bag compared with a 90 micron rosin bag, but the 90 micron bags will give you more filtration and slightly higher quality product.
- 36 micron: Most filtration available, highest quality output rosin for use with kief, dry sift and bubble
- 72 micron: High level of filtration, increased yields over 36 micron when pressing kief, dry sift and bubble
- 90 micron: Higher level of filtration for use with flower, trim, and shake rosin pressing
- 115 micron: Ideal level of filtration and high yielding for use with flower, trim, and shake rosin pressing.
The pressure needed to extract Rosin from your starting material will vary depending on the following factors: Surface Area, Freshness, Heat Applied, Amount of Material over the surface area, Type of Material (Cured Flowers, Dry Sift, Bubble, etc). As a general guideline, the more heat you apply, the less pressure you will need (to a certain extent). From our experience, many strains will press very nicely at around 1000 – 1500 psi per inch of material being pressed in the lower temp range of 190 – 215 degrees.
Pre-press molds will help increase your rosin yields with any material and help to prevent bag blowouts, especially with kief, dry sift and bubble. This is achieved by applying pressure to your material inside the bag so that it's more evenly packed and distributed to the seams for easier oil extraction.
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