This 190 proof (95%) ethanol contains 5% of denaturants, including methanol and isopropyl alcohol, to make it unfit for human consumption.At Lab Alley, we understand that high quality reagents are essential to the integrity of your laboratory and manufacturing projects. That’s why we believe you deserve to have full confidence in the quality of your reagents. Lab Alley provides high quality, reliable 190 proof denatured ethanol, ideal for your laboratory and manufacturing needs.190 proof denatured ethanol is in stock in all multiple sizes ranging from 500 ml to 270 gallons for quick shipping to you.