FAQ

3D DISINFECTION PROCESS

Is conventional cleaning necessary in advance despite 3D disinfection with the CleanCube?

 3D disinfection, also known as cold fogging, is a surface disinfection and complements conventional wiping. To achieve an optimal disinfection effect, the surfaces must be visually clean. In addition, 3D disinfection offers preventive protection against resistant microorganisms.
 

Can the room be entered during the 3D disinfection process? How long do I have to wait before re-entering?

During the disinfection process, the room may only be entered wearing a full protective suit.

 After the disinfection process has ended, a waiting time of at least 110 minutes must be observed before re-entering the room. Alternatively, equipped with a protective mask and protective groove, the room can be ventilated after 40 minutes by opening a window and re-entered after a further 20 minutes.
 

What does AFNOR NFT 72-281 tested mean?

This is a French test standard that has established itself as the standard method for testing aerosol surface disinfection systems. It is used, among other things, by the European Biocidal Products Regulation. Very strict standards must be met for certification. To date, only around 30% of the aerosol systems on the market meet the performance requirements of AFNOR NFT 72-281.

The CleanCubes in combination with the disinfectant CleanLine fully meet the requirements of the AFNOR NFT 72-281 test.

Does CleanLine damage furniture, fabrics, electronic devices and other sensitive surfaces?

In principle, these surfaces are not attacked. However, it is recommended to remove plants and food from the room before the disinfection process. According to the instructions, the CleanCube must be at least three meters away from the next object so that it is not sprayed directly.

However, there is no 100% guarantee, as furniture, textiles, etc. have very different surface textures and are made of a wide variety of materials and dyes.

The specified spray quantity must be strictly adhered to and the calculation form must be taken into account in the case of high humidity. steinemann-disinfection.ch/kunden

 
How long does the room need to be disinfected?

Please refer to the CleanCube operating instructions or the separate operating guide steinemann-disinfection.ch/kunden for information on spraying times. The disinfection time varies depending on the volume of the room.

 
Where are CleanCubes used?

The CleanCube is only to be used in closed rooms. Depending on the CleanCube type, there are different areas of application, such as in food processing plants, laboratories, operating rooms, patient rooms, company buildings, hotel rooms, public transport, restaurants, fattening farms, or even professional cleaning companies. The CleanCube is also suitable for high-risk environments such as microbiological laboratories, pharmaceutical production plants, virological research institutes or medical facilities with pathogenic viruses or highly resistant bacteria.

 
Is special training required to operate the CleanCube?

The supplied operating instructions are self-explanatory. The Steinemann Disinfection team will be happy to help you with further information and application support. disinfection@steinemanngroup.com

 


Effectiveness of the CleanLine

Why does CleanLine have a disinfecting effect?

CleanLine consists of 7.5% hydrogen peroxide and 0.015% silver.

After contact with organic materials, hydrogen peroxide decomposes into volatile elemental oxygen. This attacks the cell walls of microorganisms. The chemical reaction of the oxygen with the molecules of the cell walls destroys them.

 
Why is hydrogen peroxide enriched with silver?

Silver nanoparticles effectively kill microbes by using the oligodynamic (damaging effect of metal cations on living cells) effect of silver on microbes. After mercury, silver is the metal with the strongest effect on various pathogens such as bacteria, viruses or fungi.

The silver content in CleanLine is dosed in such a way as to ensure the most effective effect possible. Increasing the silver content would not, in principle, improve the disinfection effect.

 The synergistic effect of oxygen and silver creates an effective biocide. The oxidizing effect of hydrogen peroxide is further increased by the silver.
 

How does silver work as a biocide?

Silver has three different mechanisms of action:

  1. Silver forms DNA or RNA complexes with the genetic material of microorganisms and thus inhibits their proliferation.
  2. Silver binds to the sulfur bridges of proteins and thus prevents the enzyme activity of microorganisms. These are thereby inactivated because the cell's ability to generate energy is limited.
  3. Metal ions increase the permeability of cell membranes, which weakens microorganisms and makes them much more susceptible to oxidizing biocides.

How does hydrogen peroxide decompose?

Hydrogen peroxide is a liquid compound of hydrogen and oxygen that is colorless when diluted and largely stable. During disinfection, the hydrogen peroxide decomposes into water and oxygen when it settles on the surface.

How can it be proven that disinfection has taken place everywhere?

The distribution of hydrogen peroxide in the room can be checked using test strips.

These should be placed in places that are not directly sprayed, such as under the table top, behind furniture, etc. to check the 3D disinfection.

What evidence is there that the microorganisms have been killed?

Test slides such as Hygicult TPC are available as accessories, which allow a quick check of microbiological hygiene. These are ideal for analyzing the effectiveness by means of a contact test before and after the disinfection process.

Is CleanLine also effective against SARS-CoV-2?

Like many other human pathogenic viruses such as influenza, mumps, measles or Ebola, the Coronaviridae belong to the enveloped viruses. Enveloped viruses are very sensitive to a reaction with disinfectants containing at least 0.5% hydrogen peroxide or ethanol-based agents with a content of 62% or more.


 

Residues / deposits


Is it possible to get silver poisoning despite using CleanLine as directed?

Silver poisoning is impossible. Silver poisoning requires 1000 mg of cumulative silver intake. This would correspond to 6.7 liters of CleanLine. The specialist literature states that 90% of the silver ingested with food is excreted.

Silver does not produce any vapors and therefore cannot be inhaled.

What happens during spraying with hydrogen peroxide and silver?

The two substances are closely coupled and decompose when they come into contact with the surface. The silver remains on the surface in very small quantities.

How much silver residue remains on the surface after application?

With professional spray disinfection, in a room height of 2.5 meters, for example, around 2.3 mg of silver is deposited on an area of one square meter. This silver effectively counteracts new contamination.

Calculation:
6 ml of disinfectant is used per cubic meter. For a room height of 2.5 meters, 15 ml of CleanLine is used per square meter, which corresponds to a silver residue of 2.3 mg.

Contact information

Steinemann Disinfection | CleanService Group AG

Wilerstrasse 2180
9230 Flawil
Switzerland

disinfection@steinemanngroup.com

+41 71 555 11 30

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