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In both these types, the cups are sealed with a lid through which the ignition source can be introduced. Closed cup testers normally give lower values for the flash point than open cup (typically 5–10 °C or 9–18 °F lower) and are a better approximation to the temperature at which the vapour pressure reaches the lower flammable limit. In ...
Cannabis performance art, 2016, San Francisco Women's March, 2018 San Francisco interim Mayor Mark Farrell London Breed Ron Dellums. January. Starting January 1, with the Adult Use of Marijuana Act going into effect statewide, Harborside Health Center, The Berkeley Patients Group, and many other Marijuana dispensaries in the Bay Area begin retail sales of Marijuana to the general public ...