[Abbr. for International Food Standard] - Defined in 2003 by representatives of the European retail-food industry, the IFS is used to audit and certify systems ensuring food safety, as well as quality and conformity in food production.
Technically speaking, microorganisms are not actually killed off by the lethal impact of UVC radiation, but are rendered ‘inoperative’ or incapable of dividing. Since viruses are by definition not considered to be living organisms, it follows that they cannot be ‘killed off’.
Inert or noble gases are monoatomic gases whose orbitals (electron shells) are fully occupied with electrons. As a result, they tend not to react chemically with other gases or substances.
The term infection describes the process by which pathogens penetrate into the body of an organism and multiply therein. Depending on the transmission route, we distinguish between smear infections, contact infections and droplet infections.
Measure for describing the ability of a pathogen to cause actual infection in a host after transmission occurs.
[IR radiation for short] - this is the spectral range of 780 nm to 1000 µm, i.e. the wavelength range lying between the spectral range of visible light and the so-called terahertz radiation range. The thermal (‘mid-’) IR radiation range lies between 3 µm and 50 µm.
Ions are generally understood to mean atoms that are electrically charged.
Ionising describes the type of radiation capable of permanently removing electrons from atoms or molecules, thereby changing the state of charge of the latter two. Radioactive radiation and X-ray radiation are among the typical representatives of ionising energies. Note: UVC radiation has no ionising power, and hence does not figure among the ionising rays. (See also Technology - generating UV rays).
[Abbr. for international protection] - Types of protection that are classified according to DIN 40050. The letters IP are followed by two digits, the first indicating the degree of protection afforded against the ingress of solid bodies, and the second describing the degree of protection against the ingress of water.