The smaller the micron rating number, the tighter the filter and the higher quality oil you’ll end up with. The larger micron rating numbers have wider holes, which means less filtering and a higher yield.
Our RTP Rosin Filter Bags range from 25um – 220um. Filter size is a personal preference, but we recommend the following micron ratings:
– Bubble Hash: 25-45um
– Dry Sift/Kief: 45-90um
– Flower: 90-120um (or no bag)
– Trim/Leaves/Shake: 120-220um
For more useful information, we suggest reading our “How To Make Rosin” guide.