Disinfection test of liquid agents (suspension method for test bacteria)
Disinfection test of liquid agents
Disinfection test of liquid agents (suspension method for test bacteria)
This is the most commonly used testing method for investigating the disinfection and antibacterial effects of liquid and paste samples. It allows for quantitative confirmation of the extent to which bacteria are killed within a specified time when the sample comes into contact with the bacteria. It is often used to examine the fundamental disinfection effects of the sample, regardless of how the sample is used.
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【Testing Method】 For the test sample, inoculate 0.1 mL of the test bacterial solution into 110 mL of the test sample and let it stand for a specified time (3 points, e.g., 10 seconds, 10 minutes, 30 minutes, etc.※2) before measuring the viable bacterial count. ※1 The sample you provide will be used as is or diluted with a specified concentration or solvent. It is also possible to dilute solid samples (such as powders). For controls, phosphate-buffered saline, saline, and purified water will be used. ※2 You need to specify this. Since it is the time expected for the effect of the sample, there is no standard setting. Please specify the time you expect the effect of the sample, whether it be a short time (10 seconds to a few minutes) or a long time (a few tens of minutes to a few hours). For details, click here. 【Reference】Other testing methods conducted with liquid samples There is also a method where the test piece is treated with the sample (such as spraying), and the viable bacterial count before and after treatment is measured. - Disinfection activity testing method for household synthetic detergents and soaps - Disinfection activity testing method for kitchen synthetic detergents and soaps on sponges
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At our center, we not only conduct tests as specified by JIS and other regulations, but we also propose testing methods that suit the purpose of the tests. We capture the entire problem for problem-solving and provide practical advice.