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Yes. The only recent changes are the commercial source of lye (Lowe's) since Red Devil was discontinued, the washing with 14ml of chilled undiluted ammonium hydroxide per gram of DMT, and the marble trick. I lost five grams of DMT determining the optimum ammonium hydroxide wash. I tried room-temp 50%Water-50%NH4OH, chilled 50%Water-50%NH4OH, room-temp NH4OH, and chilled NH4OH. I measured the dried weight before/after on a milligram resolution scale. The chilled Ammonium Hydroxide had the least loss. Then I determined what amount resulted in a 10% loss rate (the most I was willing to lose). Ultimately: 14ml/gram chilled. Expensive information!!!
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