A new cannabis testing laboratory is opening in downtown Honolulu. Steep Hill Hawaii will be a full-service quality-assurance laboratory for medical marijuana with testing equipment that can handle up to 500 test samples per month. State law requires independent analysis of the products sold by medical marijuana dispensaries. The lab will test batches of marijuana for potency levels and to ensure the products are free of pesticides and other contaminants. The testing facility will be at 1150 South…