Santa Cruz’s SC Laboratories tested 70 rolling papers, 25 pre-rolled cones, 20 wraps, and three cellulose-based papers, revealing that nearly 90% of rolling papers contained at least one heavy metal with 8% testing above the state’s allowable limits.
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- No rolling papers or cellulose-based papers tested beyond pesticide limits—just one cone failed—but four of the 19 wraps exceeded state limits.
- “While 11 percent of the rolling papers in this study would fail above the action limits for inhalable products in California, it should be noted that the paper constitutes only a fraction of the overall mass of a cannabis pre-roll product,” said Josh Wurzer, SC Laboratories president and co-founder.
