You Need Help?

Check the most common asked questions.

APPLICATION AND STORING

The maximum lifetime of the full functionality of the AS-100 is 12 months. However, the lifetime of photosensitizers can be shortened by exposure to UV light: – in case of indoor use and artificial source of light, the AS-100 would be effective for a period of 12 months; – if the AS-100 is exposed to sunlight to a limited extent (e.g. window handles), we recommend replacing the tape every 6 months; – in case of outdoor use, the lifetime of the tape will be shortened to 3 months (in the Central European zone), or even up to 1 month (in climate with very high UV intensity, e.g. subequatorial climate zone).

FUNCTIONALITY

The photodynamic coating contains photosensitizers, which absorb ambient light falling on AS-100 Tape. As a result, excited photosensitisers transfer energy from light to the oxygen present in the surrounding air. The active oxygen layer is much higher than the size of the microbes and reaches its highest level of effectiveness up to 0,4mm. However, individual oxygen molecules are able to move away to a maximum of 1 mm and are then deactivated.

Singlet oxygen is an energetically rich form of oxygen found in the atmosphere. In addition to other oxygen radicals, singlet oxygen is also produced naturally by the human immune system and many other living organisms to combat pathogens. Highly reactive singlet oxygen reacts with the proteins and lipids of the cell’s microbial envelope, and the bacterial envelope is deactivated by, for example, lipid peroxidation. Singlet oxygen has been successfully used for many years in photodynamic medicine, which is used by dermatology, stomatology and ophthalmology. For example, it is approved as a treatment for retinal diseases. The safety of singlet oxygen has been documented in the treatment of numerous patients.

MAINTENANCE

REGULATIONS

In principle, AS-100 Tape does not contain an active substance which itself would be a biocidal substance. In the construction of the tape we used photosensitizers, which as a result of the action of visible light, activate oxygen in the atmosphere, creating the so-called singlet oxygen.

The barrier of active oxygen formed on the surface of AS-100 Tape has antimicrobial activity. In other words, the tape does not emit metal nanoparticles or biocides, and its working rule is based on oxygen contained in the atmosphere, which cannot be registered as a biocidal substance. Oxygen, air and a light source are the only components involved in the biocidal process.

Products based on photosensitisers can now be distributed in the European Union as biocides. The transitional regulations of Article 93 for in situ biocides shall apply. Until the evaluation of the dossier of active substances is carried out, these products may be sold without authorization. A producer list in accordance with Article 95 is not required.

Need Help? Call Our Support Team

If you do not find answer, you can call our specialists or use the contact form.