PREempt HLD5 Chemical Sterilant Disinfectant For Tool 1 Gallon (4L)Preempt HLD5 Tools (1gal 4L) PRE 11505 PREempt HLD5 is a 2% Accelerated Hydrogen Peroxide formulation that provides high level disinfection of tools and implements in only 5 minutes without the use of harsh chemicals. Can be re used for up to 14 days in a soaking tray, saving you time and money. Disinfects Tools in 5 Minutes Ready to use (no mixing or activation required). No special ventilation needed and leaves behind no toxic residues.