what “73–159µ Micron” actually means in the context of THCa rosin:
🔬 What Micron Ratings Mean
- Micron (µ): A unit of measurement equal to one‑millionth of a meter.
- In rosin production, micron ratings refer to the size of the mesh openings in the filter bags used during pressing.
- These bags catch plant material while allowing resinous trichome heads (the good stuff) to pass through.
🌿 73–159µ Micron Range
- 73µ – 159µ indicates the range of trichome head sizes collected and pressed into rosin.
- Trichome heads typically fall between 70µ and 160µ, which are considered the “sweet spot” sizes for solventless rosin pressing.
- This range balances purity and yield:
- Lower microns (25–45µ): Capture smaller heads, very pure but lower yield.
- Mid‑range (73–120µ): Considered the headstash zone — best flavor, potency, and terpene expression.
- Higher microns (149–220µ): Capture larger heads, higher yield but sometimes less refined.
So when you see 73–159µ, it means the rosin was pressed from bubble hash collected in that micron range — essentially the prime trichome heads that deliver both potency and flavor.
⚖️ Why It Matters
- Quality: Mid‑range microns (73–159µ) are prized for connoisseur‑grade rosin.
- Flavor: Strong terpene preservation, clean melt.
- Yield: Good balance — not as low as 25µ, not as “dirty” as 220µ.
- Marketing: Including the micron range on your product page signals craftsmanship and transparency.
✅ For Masterball Melts, highlighting “73–159µ Micron” on your product titles and descriptions reinforces that you’re offering premium, small‑batch solventless rosin pressed from the best trichome heads.
![[Strain Name] THCa Rosin by Masterball Melts in a 2-gram jar, premium solventless extract with [flavor notes]](https://masterballmelts.com/wp-content/uploads/2025/09/istockphoto-2192220661-612x612-2.jpg)
