Duda's Isopropyl Alcohol is manufactured to USP (United States Pharmacopeia) specifications which is also known as "Medical" alcohol. However, it is not repackaged in a white room and is therefore marketed as Industrial Isopropyl Alcohol. USP grade alcohol is intended for use in pharmaceutical drug manufacturing. Industrial alcohol may be used in several general use applications. Duda's Isopropyl Alcohol has a 99.9+% purity specification. If a lower concentration is desired, it is ideal to purchase our pure Isopropyl Alcohol and cut it with water to the desired concentration by weight. Pre-mixed formulas are more expensive to purchase due to the additional costs associated with shipping the water weight of the product. Save yourself money by purchasing our PURE Isopropyl Alcohol. We take great care in manufacturing our bottles of Isopropyl Alcohol. The alcohol is filtered using a nominal 1 micron polyester filter. Each bottle is filled using a calibrated servo liquid delivery system to ensure an exact fill level of 950ml (32.1 Fl oz). Our ribbed caps are tightened to 40-45NM of torque and the Poly-Metal cap seals are adhered to the neck of the bottle using a 5000 watt Contiguous Sealing System.