Subject : SpeechMike cleaning guidelines
Antimicrobial effect
As you might remember the antimicrobial effect is based on an addition agent, that is put into the plastic before molding the housing parts.
The antimicobial effect is not based on a coating and can therefore not be wiped off by any cleaning detergents.
This also means that the antimicrobial effect of the SpeechMike3 housing is homogeneous in the plastic material.
The advantage is, that therefore the antimicrobial effect is also given in the holes of the mic and the speaker.
According to the supplier of the addition agent (Sterione) the antimicobial effect last for 5 years minimum.
illustration by SteriOne
The supplier also states that anti-microbe materials work against a range of different microorganisms:
· Bacteria (e.g. pneumo-coccobacilli and multi-resistant micro-organisms such as MRSA.)
· Viruses (e.g. HIV, influenza etc.)
· Fungi (e.g. Aspergillums Niger)
· Algae
Test results
Overall we have got very positive results from two independent test labs from about the antimicrobial effect of the antimicrobial additive.
Please find below a high-level description on what has been done in the laboratories
Test standards:
The tests are done on SpeechMike 3 housing parts according to the following standards: JIS Z 2801 und die ISO 22116:2007
These standards are related to “Tests for Antimicrobial Activity and Efficacy” or “Test for Antimicrobial Activity of Plastics”
Test procedure:
The surface of the SpeechMike housing is coated with suspensions of 2 different bacteria.
After 2, 3, 4, and 5 hours the number of bacteria that were left on the surface is counted according to a scientific count method.
Test results test lab 1:
The tested additive/plastic compound in the SpeechMike housing eliminates 99.9% of all tested bacteria after 5 hours.
· Blue line: bacteria 1 (e.coli)
· Red line: bacteria 2 (m.luteus)
· Green line: reference housing sample with other (ineffective) antimicrobial additive
Test results test lab 2:
In this test the lab tested the bacteria “Escherichia coli” and “Staphylococcus aureus”.
Cleaning
As mentioned above the SpeechMike III can still be cleaned with standard cleaning appliances.
Ideally wipes should be used like e.g.
· Ballicol Tissues
· Ballicol Wipes
· Bode X-Wipes
Liquid appliances like
· Sterillium
· Ballicol AF
can also be used, but here it should be avoided that liquid gets into the device.
If liquid gets onto the printed circuit board malfunction can occur at least for the time until the liquid is evaporated.
There is absolutely no safety risk (because the SpeechMike is just supplied by the 5V from USB).
With the above listed and/or similar products all outside parts of the SpeechMike can be cleaned and sterilized.
The impossibility to clean the holes of the mic and the speaker it’s not a problem, because the antimicrobial character of the housing is still effective there.
More information on the antimocrobial effect can be gained on the Internet at www.sterione.com or by googling the term “antimicrobial”.
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Version:
SpeechMike
Keywords: SpeechMike, cleaning guidelines
Related links: www.sterione.com
Rob Olijve
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