Formula O Smoke Oil is a high quality substitute for use in MDG Max, MDG Max HO and MDG UltraMax Series of Smoke Generators. Due to the fine particle size, a small amount fluid will make a huge amount of smoke. What this means to you is that you buy less fluid, save money and train in a better environment. Formula O, when used properly, has a much greater hang-time and there is almost no residue and if any, it is very easy to clean up. Formula O also travels very well in ducted systems and when used in a open flame environment, the upper layer will stay obscure for at least several minutes. Formula O Smoke Fluid is colorless, odorless, non-flammable and leaves little to no residues or contamination. All of our fluids comply with the strictest health and safety regulations, and are formulated to extend the life-span of your smoke generator. Formula O Smoke Fluid will produce the perfect effect for your training needs. It is made from the highest quality pharmaceutical grade chemicals and with the amazing results you will see from this fluid. Formula O Smoke Fluid is the perfect alternative to high priced retail and OEM smoke fluids.