Final answer:
The final disinfection step for non-electric instruments involves immersion in a high-level disinfectant or sterilant, followed by rinsing with sterile water.
Step-by-step explanation:
The final step in the disinfection of non-electric instruments typically requires immersion in a high-level disinfectant or sterilant. Such solutions are capable of killing all microorganisms, including spores, when used according to the manufacturer’s instructions. Instruments should be completely submerged for the amount of time specified by the product’s guidelines. After immersion, it is important to rinse the instruments with sterile water to remove any remaining disinfectant, which could be toxic if it comes into contact with mucous membranes or open wounds during medical procedures.