Answer:
temperature
Step-by-step explanation:
Temperature is one of the three factors known to have remarkable influence on the effectiveness of chemical sanitizers. These sanitizers generally perform best at temperature range of 13 – 49 degrees centigrade.
Also, contact time is one of the factors that is needed for the sanitizers to effectively kill the microorganisms. The item to be cleaned should come in contact with the chemical for the recommended period of time.