Our cartridges are solvent-free, and never contain contaminants, which not only detract from the flavor, but can be unsafe to inhale. All tanks are clearly labeled, and are available in Sativa, Indica, and Hybrid varieties. Live resin uses fresh, frozen whole cannabis flowers as opposed to buds that have been dried and cured. All Alpine concentrates are made with our proprietary extraction methods, which utilize supercritical fluid extraction (SCFE) and Microwave Hydrodiffusion and Gravity (MHG) technologies to achieve the highest degree of purity and clarity. Raw materials are processed at multiple stages until our concentrates are completely free of all solvents, contaminants and plant-material, ensuring the cleanest tasting and most potent product possible.