Since its creation in 1985, Abiotec the UV technology specialist, with Berson UV (Nederlands) has installed over 2000 systems in France and on all five continents. Its three locations (a triangle comprising Ile-de-France, the Southwest and the Southeast) ensure effective coverage of the whole of France, both in terms of marketing and in terms of commissioning the various installations and after-sales service. In addition to the services provided, the Abiotec’s network of installation engineers ensures that each and every customer is given real technical assistance: advice and a consultancy facility designed to optimise the customer’s return on investment.
UV Sources amplify a natural phenomenon
The sun has a health-giving effect produced by the emission of invisible light. This natural phenomenon is used and amplified by ABIOTEC's powerful UV sources.
The DNA and RNA in micro-organisms (viruses, bacteria, yeasts, moulds, etc.) are damaged by UV wavelengths (200 to 315 nanometres). This in turn inhibits replication of the genetic material and kills the micro-organism or prevents it from reproducing.
All germs can be inactivated in this way, even if they do not all have the same UV sensitivity.
UV sterilisation is governed by a number of laws :
- Grotthus' Law. Only the wavelengths absorbed can trigger a photochemical reaction.
- The Bunsen-Roscoe Law. Exposure to a strong force for a short time has an effect equivalent to that of a weak force over a extended period.
- The Schwartzchild Effect. Well-known to photographers, this partly contradicts the Bunsen-Roscoe Law.
Exposure to very low forces requires a disproportionately long time. Now, a photochemical reaction requires a minimum amount of energy dissociation. Below this minimum value, no reaction is triggered, even with exposure over an extended period of time.
Power is the essential factor :
Given equal UV doses, the High Exposure x Short Time formula is preferable to its opposite, i.e. Low Exposure x Extended Time.
Five parameters we need from you to ensure the right design :
- Maximum instantaneous flow rate.
- UV permeability. This corresponds to the transparency of the water to UV-C rays and is measured by spectrophotometer. Abiotec’s Engineering Department will gladly perform this analysis on request.
- The application. Some applications demand more stringent quality standards than others. The more rigorous the requirement, the greater the UV dose.
- Water temperature.
- Working pressure.
Our UV Systems customised to meet your requirements
Expressed in mJ/cm², the UV dose includes the Power and Time factors using the following formula :
UV dose (mJ/cm²) = Power (mW/cm²) x Time (seconds).