The small batch epoxy resin mixer saves time wasted by hand mixing. It is simple to install and operate. The resin mixer provides many advantages over hand mixing: Eliminates variation due to hand mixing by always mixing at the same rate. Gentle mixing does not incorporate air bubbles into your mixture. Complete mixing assured because fatique, boredom and impatience of hand mixing is eliminated. Operation is easy: 1. Drop the cup with unmixed liquid into the cup holder. 2. Clip on a stir stick into the alligator clip. 3. Turn the speed knob to desired speed. Pays for itself by encouraging the mixing of small batches of material rather than wasteful large batches. No Clean! After use simply throw the disposable cup and stir stick away. Viscous materials. This was originally developed for Epoxy resins with viscosities around 25,000 cp. Many uses: mixing epoxies, polyester resins, paints, slurries, pastes, soldermask. Ideal for research labs, QA labs, production plants and more. Replacement cups easily available at party stores, big box store, online. Comes complete with everything you need: RM-150 resin mixer with one cup holder, AC adapter, a sleeve of cups, and 50 wooden tongue depressors. 150 ml AND 250 ml cup sizes available.