Extraction Technique All Tree Sap 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.. Cartridge Information & Compatibility Our cartridges will fit any standard 510 or eGo threaded e-cigarette such as the, G-Pen, eGo-C, eGo-T, eGo Twist, Medistick, Trippy Stick, 710 Pen, Eureka Vape, Alpine vapor, Gentleman’s brand and others.