Term
| What is the difference between sterilization and disinfection? |
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Definition
-Sterilization is *complete killing, even of spores
-Disinfection is killing that fails to meet the same standards |
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Term
| How does a graph of killing look? |
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Definition
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Term
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Definition
| -Steam under pressure (at about 121°C and 15psi) |
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Term
| How hot and long for dry head for sterilization? How long for boiling? |
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Definition
-Need 160°C for two damn hours
-Boiling is not a valid method; doesn't kill spores |
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Term
| What can we use for heat labile materials? |
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Definition
-Can use ethylene oxide gas at about 50-60°C
-Can also use alkylating agents such as the aldehydes (glutaraldehyde and formaldehyde) |
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Term
| What do we use for high, intermediate, and low-level disinfection? |
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Definition
-High; chlorine compounds, glutaraldehyde
-Mid; alcohol, phenolic compounds
-Low; quaternary ammonium compounds |
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Term
| What are some physical means? |
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Definition
| -We can use stuff like UV light, radiation, and filtration |
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Term
| What are the heavy metals we can use in one form or another? |
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Definition
-Mercury, silver, and arsenic
-Mercury as phynylmercury salts for pseudomonads in cosmetics
-Silver nitrate for burn victims |
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Term
| What are halogens and examples? |
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Definition
-They are **oxidizing agents;
-Chlorine; for water
-Iodine; causes hypersensitivity sometimes (and staining)
-Iodophors (iodine & detergents); less hypersensitivity
-Hydrogen peroxide; kills bac at low and spores at high concentrations |
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Term
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Definition
| -Vaporized hydrogen peroxide |
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