Final answer:
To check the concentration of sanitizer when mixing it using a test kit, you can use the use-dilution test. This test involves dipping a stainless steel cylinder in a culture of the microorganism of interest, then in solutions of disinfectant at different concentrations, and finally transferring it to fresh sterile medium to see if there is bacterial survival.
Step-by-step explanation:
To check the concentration of sanitizer when mixing it using a test kit, you can use a method called the use-dilution test. In this test, a stainless steel cylinder is dipped in a culture of the microorganism you want to disinfect and then dried. The cylinder is then dipped in solutions of disinfectant at different concentrations for a specific duration. After that, the cylinder is transferred to a new test tube with fresh sterile medium and incubated. The presence of turbidity in the medium indicates bacterial survival, while no turbidity indicates killing of the target organism by the disinfectant