Services
Microbiological testing
cu-serviceMicrobiological testing information
NBC Meshtec has an in-house virus lab, which is used to develop antiviral, antibacterial, and other technologies and to improve product performance.
In addition to testing in accordance with each standard for evaluating antiviral, antibacterial, and anti-biofilm properties, we are flexible to customize test conditions according to customers’ objectives.
We will make proposals based on the knowledge we have gained from developing our own antiviral and antibacterial technologies from the ground up.
Features
- Meets antiviral and antibacterial testing standards for fibers or non-fibers
- Meets anti-biofilm testing standards
- We will propose appropriate testing methods depending on the sample material, shape, size, etc.
- Delivery time is approximately one month (depending on the contents of the test and the status of the contract).
Please use this service for evaluating your antiviral and antibacterial products at the development stage, confirming performance, and making prior confirmation for acquiring various certification marks.
Application examples
Product specifications
| materials |
|---|
| Mesh count |
| Wire diameter |
| Application examples |
| Material of mesh |
| Processing methods |
| Target material |
| Features |
| Applications |
| Resin materials |
Comparison of properties
| Tensil strength |
|---|
| emulsion adhesion |
| antistatic capability |
If the sample is a fiber product, the antiviral test is performed according to JIS L 1922 / ISO 18184 and the antibacterial test is performed according to JIS L 1902 standard.
1. A sample (0.4 g), cut into 2 cm square, is placed in a stack in a vial.
2. A solution containing virus or bacteria is injected.
3. Then, after 2 hours for the antiviral test (JIS L 1922) and 18 hours for the antibacterial test (JIS L 1902),
the viruses or bacteria remaining on the sample are washed out using a washout solution.
4. The number of viruses and bacteria surviving in the washout solution is counted.
For viruses, the method is called the plaque method; for bacteria, the method is called
the mixed plate culture method (colony method).
5. The antiviral or antibacterial activity value is calculated from the counting results.
If the sample is a non-fiber product, the antiviral test is performed according to ISO 21702 and the antibacterial test is performed according to JIS Z 2801 standard.
1. A sample, cut into 5 cm square, is placed in a petri dish.
2. A solution containing virus or bacteria is injected and a 4 cm square cover film is placed over it.
3. After 24 hours, the viruses or bacteria remaining on the sample are washed out using a washout solution.
4. The number of viruses and bacteria surviving in the washout solution is counted.
For viruses, the method is called the plaque method; for bacteria, the method is called the mixed plate culture method (colony method).
5. The antiviral or antibacterial activity value is calculated from the counting results.
The anti-biofilm test is performed according to the ISO 4768 standard.
1. A sample, cut into 3 cm square, is attached to a 4 cm square glass plate, and it is placed in a test container.
2. A solution containing bacteria is added for incubation at 35°C for 48 hours to form a biofilm.
3. The biofilm is stained with a crystal violet solution and wiped off with a water-soluble non-woven cloth to collect it.
4. The non-woven cloth used to wipe off the biofilm is dissolved in a solution and the absorbance (590 nm) of the solution is measured with a plate reader.
5. The anti-biofilm activity value is calculated from the measurement results.
Special Site
Did you find what you were looking for?
If you have any questions or comments about Cufitec®, please feel free to contact us.
We will make proposals according to your concerns and wishes regarding microbiological control measures.