Bubble Hash vs Dry Sift

Both products are concentrated cannabis trichomes. Bubble hash uses ice water and mesh bags. Dry sift uses screens and motion. The resin heads are the same. The separation method is not.

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How Bubble Hash Is Made

Growers freeze trim or flower, then agitate it in water with ice. Plant material stays in a 220 micron work bag. Trichomes pass through a stack of bags, often 160, 120, 90, 73, 45, and 25 micron. Hash settles in each bag. The 73 to 90 micron range holds the most intact heads and grades as full melt. The product holds water after collection. It needs drying, either in a freeze dryer or on a screen in a cold room. Wet hash can mold.

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How Dry Sift Is Made

Dry sift moves dried cannabis over one or more screens. No water. No solvent. A 150 micron screen removes stems and leaf. A 90 micron screen and finer screens clean the resin. What falls through is kief, and pressing it makes dry sift hash. Static electricity or a card helps separate plant matter from resin heads. There is no drying step after collection.

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Potency and Yield

Lab reports for bubble hash land near 40 to 60 percent THC. Dry sift lands near 30 to 60 percent THC. Numbers depend on starting material and screen size. Ice water hash yields about 5 to 15 percent of the input weight. Dry sift yields about 5 to 20 percent. Water removes some water-soluble material. Terpenes sit in the resin head and remain in both forms. Dry sift holds more plant matter at wide screens.

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Our Pick

Buy bubble hash in the 73 to 90 micron range first. It dabs, presses into rosin, and holds a stable grade across brands. Dry sift costs less per gram and needs no drying step. Pick dry sift if you smoke bowls or joints.

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Storage

Store both in glass in a fridge at 34 to 40 F. Keep air out. Dry sift keeps longer at room temperature than bubble hash that was not dried. Check for moisture before you seal a jar.