Phoenix New Times: “In Colorado, the past 16 weeks have seen 15 recalls of cannabis products because of pesticides, including the largest such recall last week. The state’s one of several that now mandate or encourage testing of recreational marijuana for contaminants. But in Arizona, the products of medical-marijuana sellers and cultivators never have been officially scrutinized. If the state approves recreational use in November, that’s going to change — with a likely increase in pot pricing. Buds, concentrates like shatter, and edibles could contain relatively high levels of pesticides and other contaminants, and the state’s 85,000-plus qualified patients never would know.