Pure Undenatured Ethanol: Pure Ethanol is Ethyl Alcohol with no other additives or denaturants. Pure ethanol is often referred to as pure alcohol even though the term “pure” can refer to any proof. Pure Alcohol is considered “pure” regardless of the “cut” of water (proof). Pure Alcohol (Ethanol) is commonly referred to as Beverage Grade Alcohol. It is always 192 proof and derived from natural sources.
Pure USP Alcohol: Pure Alcohol is also often referred to as USP Alcohol. That is because only pure, undenatured Ethanol can be certified as USP or NF Grade. Not all pure alcohol is USP grade certified, but only 190 and 200 proof pure ethanol which meets or exceeds the stringent standards set forth in the US Pharacopoeia.
190 vs. 200 Proof Alcohol: All Ethanol products have a proof associated with the product description. The proof is the measure of water content of the Ethanol portion of the product and any level of proof can be manufactured based upon the amount of water added. The majority of all Ethanol products are either 190 or 200 proof, the third most common being 192 proof.