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This is a test method that compares the degree of bacteria proliferation with an antibacterial processing test piece and a piece -free test piece. It can be implemented with water -absorbing specimen, such as textile products and paper. ■ Test method using JISL1902 (bacterial solution absorption method) 0.4 g of the specimen of 0.4 g (prepared for antibacterial and non -processing testing) is 0.2 ml of testing solution (prepared using 1/20 neutrient medium) and cultivated at 37 ° C for 24 hours. Before and after the culture, the specimen is washed out. The number of raw bacteria of the washed liquid is measured and the number of raw bacteria of the specimen is measured. * 1 The test will be performed using three test pieces for each of the samples and before and after the culture. * The sterilization of the test piece before the test is not performed unless there is instructions. If you wish, please let me know. * A piece of unprocessed testing refers to "the same substrate as an antibacterial processing test piece that does not perform antibacterial processing". * It is also possible to use a test piece that has been treated using a liquid or the like as an antibacterial processing test. We can prepare a piece of cotton cloth at our company. ■ Test bacterial species ・ STAPHYLOCCUSAUREUS ・ KlebsieLLAPNEUMONIAE (pneumonia bacilli) NBRC13277 * The specified bacteria specified in Jisl1902 are the above two bacteria. Depending on the purpose of the test, it is possible to change the test bacterium from the specification. * Although it is a method specified by bacteria, we also accept requests for performing with yeast. Change the conditions of the culture at the time of the previous culture and the number of bacteria in the number of raw bacteria to the condition suitable for yeast. ■ Necessary specimen Minimum required amount: Antibacterial processing test pieces and non -processed test pieces 4.8g or more (2.4g or more per bacterium) * The test will be cut to 0.4g per piece. * If possible, we would appreciate it if you could provide more than 1.5 to 2 times the required number, including the spare. ■ About sterilization of samples JISL1902 stipulates that specimens are sterilized and used for tests, but we can select whether to test or test without sterilization or sterilization. Sterilation is performed in autoclave (high -pressure steam sterilization, 121 ° C at 121 ° C). If you wish to sterilize, please let me know. ■ Information necessary for the test implementation It is smooth if you can get the following information when quoting. ・ Number of specimens ・ Presentation of specimens corresponding to non -processed test pieces ・ Requested effects * (except for the Japanese Report) ・ Test bacterium species (if you want to do it with bacterial species different from the rules) ・ If you wish to sterilize in the test piece, that effect ・ How to make a test piece (when you want to test using a test piece processed with liquids, etc.) * If there is no request, only the Japanese sentence (test method and test result (judgment result of the testing conditions, the number of raw bacteria after culture, antibacterial activity), no image). ■ Delivery date 3 weeks ~ ※Please contact us for more information. ■ Expenses Please contact us.
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Antibacterial test (JIS L 1902 (bacterial solution absorption method))Handling Company
Sanitation Microbial Research Center| Image | Price (excluding tax) | Investigate content () | Main sample properties () |
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Available upon quote | Prolification / growth suppression effect of bacteria by sample (quantified) | Water -absorbed test piece |
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