Faint reactions for Marquis (brown grey?), Mecke (brown blue?), and Mandelin (brown?) tests. The field reagent reactions are normal for LSD blotter. Marquis, Mecke, and Mandelin are unreliable when applied to printed paper and can change to brown/grey colors in the presence of paper and dye.
Mandelin's clear purple color change is indicative of the presence of LSD and the lab's GC/MS method for identifying LSD confirms this field reagent result.
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Mandelin's clear purple color change is indicative of the presence of LSD and the lab's GC/MS method for identifying LSD confirms this field reagent result.