UVC glossary on UVC disinfection & Co.
The glossary below contains approx. 220 terms and abbreviations relating to UVC disinfection and UVC disinfection.
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pandemic
A pandemic is an infectious disease of temporarily exceptionally high prevalence occurring across national borders. See also epidemic.
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parasite
Parasites are organisms which need substances generated by other organisms - termed ‘hosts’ - for their metabolic function. In acquiring these substances, they damage, or even kill (in the case of parasitoids) the host.
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pathogen
Pathogens are microorganisms capable of causing disease or illness in living creatures. Their harmful effects are usually due to toxins which they excrete. The opposite of pathogenicity is apathogenicity. The latter is defined as the inability of a pathogen to cause the disease in a specific host organism. Pathogens affecting only humans are termed human-pathogenic.
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PE
[Abbr. for Polyethylene] - Besides polyvinyl chloride, polyethylene is the most widely industrially produced thermoplastic. We distinguish between different PE types according to their density. The UVC resistance of all PE types is generally poor, but may vary depending upon colour. See also: HDPE .
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peak
The highest point of a specified value: greatest, maximum.
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pesticide
An agent for controlling pests, usually in the sense of a plant-protection product.
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PET
[Abbr. for Polyethylene terephthalate] - PET (or PETE) is a thermoplastic polymer resin with either an amorphous or semi-crystalline structure. The amorphous sort is transparent. PET is UV- resistant only to a limited extent, if at all.
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PGN
[Abbr. for peptidoglycan] - see murein.
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photochemistry
See photolysis.
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photolysis
The decomposition or separation of chemical compounds induced by light.
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photometer
See radiometer.
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photons
A photon is the smallest unit of excitation of an electromagnetic field. It is also called the quantum of the electromagnetic field. A photon has a rest mass of zero and moves in a vacuum at the speed of light. Photons can interact with particles of matter, and can thus also be absorbed.
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plafond sanitaire technology
Bactericidally effective UV-radiation roof in the above-head area.
-
plasma
Here, non-isothermal plasma - Plasma is a mixture of freely mobile electrons, ions and neutral atoms which are in different states of excitation and strongly interact with one another. Stars are typical high-temperature plasmas. We speak of ‘non-isothermal plasma’ when - as in the case of gas-discharge lamps - only the electrons are in a state of thermodynamic balance.
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pm
[Abbr. for picometre] - Conversion: 1 pm = 0.001 nm = 0.000001 µm = 0.000000001 mm, i.e. one billionth of a millimetre.
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polymer
Polymers are chemical compounds composed of numerous cross-linked monomers that are repeatedly strung together - hence the name polymer (poly = many). Protein is a natural polymer; plastics are typical synthetic polymers.
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POM
[Abbr. for polyoxymethylene] - POM is a high-strength thermoplastic with excellent dimensional stability and very good machinability, which is why it is often used for technical applications. Like almost all plastics, POM is not UVC-stable, and its black surface turns grey and dull when exposed to UVC radiation. At very high UVC outputs, the material tends to become brittle.
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PP
[Abbr. for polypropylene] - PP is a thermoplastic with high stability and high chemical resistance. It is tougher and more heat-resistant than PE, but becomes brittle at temperatures below 0° C. PP is non-UVC-stable, and with fairly long exposure to UVC radiation the surface of the material is subject to damage and decomposition.
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prevention
The taking of precautionary measures to stop undesirable occurrences.
-
previtamin D
Previtamin D3 is a precursor of vitamin D3, which is produced in the skin via photolysis under the influence of heat and wavelengths between 290 and 315 nm (UVB).
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prokaryotic cells
also prokaryotes - Cells without a true nucleus: see also eukaryotes.
-
prophylaxis
Medical term for preventive measures for protecting health.
-
protein
Proteins or albumins are macromolecules (polymers) consisting of amino acids. They are essential elements for growth, repair, function and structure in all living cells. The UV absorption maximum of proteins is 280 nm.
-
protozoa
Protozoa (sing. protozoon) are a highly heterogeneous group of single-celled eukaryotic organisms. Among the numerous types of protozoa, approx. 40 humanopathogenic, parasitic species are known which cause malaria and dysentery, among others. Because measuring data on the UVC resistance of these organisms has a very large spread, a general statement on the lethal dose is not possible.
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PS
[Here, abbr. for polystyrene] - Polystyrene is a transparent thermoplastic. In foamed form this material is also known by the registered trademark Styrofoam. PS is non-UVC-stable.
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PTFE
[Abbr. for polytetrafluoroethylene] - PTFE is a thermoplastic fluoroplastic known primarily by the trade name Teflon of the DuPont company. PTFE has outstanding resistance to UVC rays.
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PUR
[Abbr. for polyurethane] - PUR is one of the most versatile plastics. Although mainly used in a foamed form, it is also found as a thermoplastic, elastomer, adhesive, varnish, and in the form of fibres.
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purine
Purines are nitrogenous compounds which in addition to the pyrimidines constitute the most important components of nucleic acid. The bases adenine and guanine are derived from purine. Formed by the human body itself, purines are broken down into uric acid.
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PVC
[abbr. for polyvinyl chloride] - PVC is an amorphous thermoplastic made soft, elastic and malleable by the addition of softeners and stabilisers. Depending on its composition and the proportion of softeners it contains, it is therefore UVC-resistant only to a limited extent.
-
PVDF
[abbr. for polyvinylidene fluoride] - PVDF is a flame-retardant crystalline thermoplastic with excellent UV resistance. Like PTFE, it is a good electrical isolator, and it is also highly resistant to acids and alkalis.
-
pyrimidine
Like purine, pyrimidine forms the base component of the organic bases. The bases cytosine, thymine and uracil are derived from pyrimidine.
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pandemic
A pandemic is an infectious disease of temporarily exceptionally high prevalence occurring across national borders. See also epidemic.
-
parasite
Parasites are organisms which need substances generated by other organisms - termed ‘hosts’ - for their metabolic function. In acquiring these substances, they damage, or even kill (in the case of parasitoids) the host.
-
pathogen
Pathogens are microorganisms capable of causing disease or illness in living creatures. Their harmful effects are usually due to toxins which they excrete. The opposite of pathogenicity is apathogenicity. The latter is defined as the inability of a pathogen to cause the disease in a specific host organism. Pathogens affecting only humans are termed human-pathogenic.
-
PE
[Abbr. for Polyethylene] - Besides polyvinyl chloride, polyethylene is the most widely industrially produced thermoplastic. We distinguish between different PE types according to their density. The UVC resistance of all PE types is generally poor, but may vary depending upon colour. See also: HDPE .
-
peak
The highest point of a specified value: greatest, maximum.
-
pesticide
An agent for controlling pests, usually in the sense of a plant-protection product.
-
PET
[Abbr. for Polyethylene terephthalate] - PET (or PETE) is a thermoplastic polymer resin with either an amorphous or semi-crystalline structure. The amorphous sort is transparent. PET is UV- resistant only to a limited extent, if at all.
-
PGN
[Abbr. for peptidoglycan] - see murein.
-
photochemistry
See photolysis.
-
photolysis
The decomposition or separation of chemical compounds induced by light.
-
photometer
See radiometer.
-
photons
A photon is the smallest unit of excitation of an electromagnetic field. It is also called the quantum of the electromagnetic field. A photon has a rest mass of zero and moves in a vacuum at the speed of light. Photons can interact with particles of matter, and can thus also be absorbed.
-
plafond sanitaire technology
Bactericidally effective UV-radiation roof in the above-head area.
-
plasma
Here, non-isothermal plasma - Plasma is a mixture of freely mobile electrons, ions and neutral atoms which are in different states of excitation and strongly interact with one another. Stars are typical high-temperature plasmas. We speak of ‘non-isothermal plasma’ when - as in the case of gas-discharge lamps - only the electrons are in a state of thermodynamic balance.
-
pm
[Abbr. for picometre] - Conversion: 1 pm = 0.001 nm = 0.000001 µm = 0.000000001 mm, i.e. one billionth of a millimetre.
-
polymer
Polymers are chemical compounds composed of numerous cross-linked monomers that are repeatedly strung together - hence the name polymer (poly = many). Protein is a natural polymer; plastics are typical synthetic polymers.
-
POM
[Abbr. for polyoxymethylene] - POM is a high-strength thermoplastic with excellent dimensional stability and very good machinability, which is why it is often used for technical applications. Like almost all plastics, POM is not UVC-stable, and its black surface turns grey and dull when exposed to UVC radiation. At very high UVC outputs, the material tends to become brittle.
-
PP
[Abbr. for polypropylene] - PP is a thermoplastic with high stability and high chemical resistance. It is tougher and more heat-resistant than PE, but becomes brittle at temperatures below 0° C. PP is non-UVC-stable, and with fairly long exposure to UVC radiation the surface of the material is subject to damage and decomposition.
-
prevention
The taking of precautionary measures to stop undesirable occurrences.
-
previtamin D
Previtamin D3 is a precursor of vitamin D3, which is produced in the skin via photolysis under the influence of heat and wavelengths between 290 and 315 nm (UVB).
-
prokaryotic cells
also prokaryotes - Cells without a true nucleus: see also eukaryotes.
-
prophylaxis
Medical term for preventive measures for protecting health.
-
protein
Proteins or albumins are macromolecules (polymers) consisting of amino acids. They are essential elements for growth, repair, function and structure in all living cells. The UV absorption maximum of proteins is 280 nm.
-
protozoa
Protozoa (sing. protozoon) are a highly heterogeneous group of single-celled eukaryotic organisms. Among the numerous types of protozoa, approx. 40 humanopathogenic, parasitic species are known which cause malaria and dysentery, among others. Because measuring data on the UVC resistance of these organisms has a very large spread, a general statement on the lethal dose is not possible.
-
PS
[Here, abbr. for polystyrene] - Polystyrene is a transparent thermoplastic. In foamed form this material is also known by the registered trademark Styrofoam. PS is non-UVC-stable.
-
PTFE
[Abbr. for polytetrafluoroethylene] - PTFE is a thermoplastic fluoroplastic known primarily by the trade name Teflon of the DuPont company. PTFE has outstanding resistance to UVC rays.
-
PUR
[Abbr. for polyurethane] - PUR is one of the most versatile plastics. Although mainly used in a foamed form, it is also found as a thermoplastic, elastomer, adhesive, varnish, and in the form of fibres.
-
purine
Purines are nitrogenous compounds which in addition to the pyrimidines constitute the most important components of nucleic acid. The bases adenine and guanine are derived from purine. Formed by the human body itself, purines are broken down into uric acid.
-
PVC
[abbr. for polyvinyl chloride] - PVC is an amorphous thermoplastic made soft, elastic and malleable by the addition of softeners and stabilisers. Depending on its composition and the proportion of softeners it contains, it is therefore UVC-resistant only to a limited extent.
-
PVDF
[abbr. for polyvinylidene fluoride] - PVDF is a flame-retardant crystalline thermoplastic with excellent UV resistance. Like PTFE, it is a good electrical isolator, and it is also highly resistant to acids and alkalis.
-
pyrimidine
Like purine, pyrimidine forms the base component of the organic bases. The bases cytosine, thymine and uracil are derived from pyrimidine.
-
pandemic
A pandemic is an infectious disease of temporarily exceptionally high prevalence occurring across national borders. See also epidemic.
-
parasite
Parasites are organisms which need substances generated by other organisms - termed ‘hosts’ - for their metabolic function. In acquiring these substances, they damage, or even kill (in the case of parasitoids) the host.
-
pathogen
Pathogens are microorganisms capable of causing disease or illness in living creatures. Their harmful effects are usually due to toxins which they excrete. The opposite of pathogenicity is apathogenicity. The latter is defined as the inability of a pathogen to cause the disease in a specific host organism. Pathogens affecting only humans are termed human-pathogenic.
-
PE
[Abbr. for Polyethylene] - Besides polyvinyl chloride, polyethylene is the most widely industrially produced thermoplastic. We distinguish between different PE types according to their density. The UVC resistance of all PE types is generally poor, but may vary depending upon colour. See also: HDPE .
-
peak
The highest point of a specified value: greatest, maximum.
-
pesticide
An agent for controlling pests, usually in the sense of a plant-protection product.
-
PET
[Abbr. for Polyethylene terephthalate] - PET (or PETE) is a thermoplastic polymer resin with either an amorphous or semi-crystalline structure. The amorphous sort is transparent. PET is UV- resistant only to a limited extent, if at all.
-
PGN
[Abbr. for peptidoglycan] - see murein.
-
photochemistry
See photolysis.
-
photolysis
The decomposition or separation of chemical compounds induced by light.
-
photometer
See radiometer.
-
photons
A photon is the smallest unit of excitation of an electromagnetic field. It is also called the quantum of the electromagnetic field. A photon has a rest mass of zero and moves in a vacuum at the speed of light. Photons can interact with particles of matter, and can thus also be absorbed.
-
plafond sanitaire technology
Bactericidally effective UV-radiation roof in the above-head area.
-
plasma
Here, non-isothermal plasma - Plasma is a mixture of freely mobile electrons, ions and neutral atoms which are in different states of excitation and strongly interact with one another. Stars are typical high-temperature plasmas. We speak of ‘non-isothermal plasma’ when - as in the case of gas-discharge lamps - only the electrons are in a state of thermodynamic balance.
-
pm
[Abbr. for picometre] - Conversion: 1 pm = 0.001 nm = 0.000001 µm = 0.000000001 mm, i.e. one billionth of a millimetre.
-
polymer
Polymers are chemical compounds composed of numerous cross-linked monomers that are repeatedly strung together - hence the name polymer (poly = many). Protein is a natural polymer; plastics are typical synthetic polymers.
-
POM
[Abbr. for polyoxymethylene] - POM is a high-strength thermoplastic with excellent dimensional stability and very good machinability, which is why it is often used for technical applications. Like almost all plastics, POM is not UVC-stable, and its black surface turns grey and dull when exposed to UVC radiation. At very high UVC outputs, the material tends to become brittle.
-
PP
[Abbr. for polypropylene] - PP is a thermoplastic with high stability and high chemical resistance. It is tougher and more heat-resistant than PE, but becomes brittle at temperatures below 0° C. PP is non-UVC-stable, and with fairly long exposure to UVC radiation the surface of the material is subject to damage and decomposition.
-
prevention
The taking of precautionary measures to stop undesirable occurrences.
-
previtamin D
Previtamin D3 is a precursor of vitamin D3, which is produced in the skin via photolysis under the influence of heat and wavelengths between 290 and 315 nm (UVB).
-
prokaryotic cells
also prokaryotes - Cells without a true nucleus: see also eukaryotes.
-
prophylaxis
Medical term for preventive measures for protecting health.
-
protein
Proteins or albumins are macromolecules (polymers) consisting of amino acids. They are essential elements for growth, repair, function and structure in all living cells. The UV absorption maximum of proteins is 280 nm.
-
protozoa
Protozoa (sing. protozoon) are a highly heterogeneous group of single-celled eukaryotic organisms. Among the numerous types of protozoa, approx. 40 humanopathogenic, parasitic species are known which cause malaria and dysentery, among others. Because measuring data on the UVC resistance of these organisms has a very large spread, a general statement on the lethal dose is not possible.
-
PS
[Here, abbr. for polystyrene] - Polystyrene is a transparent thermoplastic. In foamed form this material is also known by the registered trademark Styrofoam. PS is non-UVC-stable.
-
PTFE
[Abbr. for polytetrafluoroethylene] - PTFE is a thermoplastic fluoroplastic known primarily by the trade name Teflon of the DuPont company. PTFE has outstanding resistance to UVC rays.
-
PUR
[Abbr. for polyurethane] - PUR is one of the most versatile plastics. Although mainly used in a foamed form, it is also found as a thermoplastic, elastomer, adhesive, varnish, and in the form of fibres.
-
purine
Purines are nitrogenous compounds which in addition to the pyrimidines constitute the most important components of nucleic acid. The bases adenine and guanine are derived from purine. Formed by the human body itself, purines are broken down into uric acid.
-
PVC
[abbr. for polyvinyl chloride] - PVC is an amorphous thermoplastic made soft, elastic and malleable by the addition of softeners and stabilisers. Depending on its composition and the proportion of softeners it contains, it is therefore UVC-resistant only to a limited extent.
-
PVDF
[abbr. for polyvinylidene fluoride] - PVDF is a flame-retardant crystalline thermoplastic with excellent UV resistance. Like PTFE, it is a good electrical isolator, and it is also highly resistant to acids and alkalis.
-
pyrimidine
Like purine, pyrimidine forms the base component of the organic bases. The bases cytosine, thymine and uracil are derived from pyrimidine.
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