Solventless WPFF Ice-Water Hash & Live Rosin Analytical SOP (73-159u)
High-terpene Whole Plant Fresh Frozen (WPFF) live hash rosin and Piattella 6-star water hash achieve 65% to 78% Total Stoichiometric THC and 6.0% to 9.5% total terpenes by isolating intact 73 to 149 micron capitate-stalked trichome heads in 0.5C to 2.0C ice water, lyophilizing to 0.30-0.42 aW prior to pressing through 25u/37u nylon rosin bags at 74C to 82C (165F to 180F), and cold-curing in hermetic glass at 13C to 16C.
Quantitative Reference Matrix
| Sieve Micron Tier | Trichome Cuticle Composition | Typical Total THC (% wt) | Typical GC-MS Terpenes (% wt) | Optimal Extraction / Post-Processing Path |
|---|---|---|---|---|
| 160u - 219u (Catch / Work Bag) | Stalk fragments, oversized heads & plant debris | 42.0% - 54.0% Total THC | 2.1% - 3.6% wt | Edible decarboxylation stock (0.877x) or topical lipid infusion |
| 120u - 159u (Broad-Spectrum Rosin) | Mature large capitate-stalked resin glands | 64.0% - 72.0% Total THC | 5.2% - 7.4% wt | Press at 78C - 82C (172F - 180F) for heavy-body full-spectrum rosin |
| 90u - 119u (6-Star Full Melt / Piattella) | Peak uniform thin-cuticle trichome heads | 68.0% - 76.5% Total THC | 6.8% - 9.5% wt | Cold-cure as 6-Star Piattella water hash or press at 72C - 76C (162F - 168F) |
| 73u - 89u (Prime Live Rosin Fraction) | High-density mid-sized resin heads | 69.0% - 77.5% Total THC | 6.2% - 8.8% wt | Combine with 90u-119u for flagship 73-149u WPFF Cold-Cure Badder |
| 45u - 72u (Late / Immature Heads) | Smaller juvenile heads & sessile trichomes | 56.0% - 65.0% Total THC | 3.8% - 5.4% wt | Press for 155F-170F sealed-jar decarb into ceramic rosin vape hardware |
Frequently Asked Questions
Freeze-dried (lyophilized) ice-water hash should measure between 0.30 and 0.42 aW (approximately 2.5% to 4.5% residual moisture) prior to pressing. If water activity exceeds 0.50 aW, trapped moisture flashes to steam on heated rosin plates, causing audible sizzling and steam-distilling volatile monoterpenes out of the rosin.
Extractors typically order Panel CA-LAB-03 (Master Chemotype Suite: 11-Cannabinoid HPLC-DAD + 21-Terpene Headspace GC-MS, EUR 99) requiring only 0.25 g of homogenised concentrate, as demonstrated in verified public batches CA-2026-04184, CA-2026-04193, and CA-2026-04197.
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