Steam Sterilization
Mostrando 13-24 de 28 artigos, teses e dissertações.
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13. Studies on Steam Sterilization and the Effects of Air in the Autoclave
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14. Residual formaldehyde after low-temperature steam and formaldehyde sterilization
The levels of formaldehyde remaining in various articles have been estimated immediately after a low-temperature steam and formaldehyde sterilizing process and after various periods of aeration. These levels have been compared with the levels of ethylene oxide remaining after exposure to an ethylene oxide sterilizing process.
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15. Sterilization by dry heat
The advantages and disadvantages of three forms of dry heat sterilization are discussed. In addition a fourth method, consisting of heating by infrared rays in vacuo, is described. This method is particularly suitable for instruments used in the operating theatre, since it can replace an autoclave where a supply of steam is not available. Recommended times a
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16. Monitoring sterilization of dressings in high-vacuum pressure-steam sterilizers
Undetected air leaks in a high-vacuum sterilizer can defeat the sterilization process. For this reason the maintenance and supervision of these sterilizers needs expert engineering care. The importance of controlling the high-vacuum sterilization process from the centre of a load rather than the chamber drain is emphasized, and a method of detecting any fail
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17. Comparison of the efficacy of steam sterilization indicators.
Twenty-one commercially available chemical steam sterilization indicators were processed in an empty autoclave for various times at temperatures between 240 and 270 degrees F (ca. 116 and 132 degrees C). The time required to reach a sterilized reading at each temperature was plotted on a semilogarithmic time-temperature plot and compared with the time-temper
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18. Bacterial inactivation by using near- and supercritical carbon dioxide
The three most common methods of sterilization in use today are ethylene oxide exposure, γ-irradiation, and steam sterilization. Each of these methods has serious limitations for the sterilization of some materials used in medicine, especially thermally and hydrolytically sensitive polymers by themselves and in combination with proteins. In this work, we de
The National Academy of Sciences.
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19. Surface Decontamination in an Autoclave Chamber with Formaldehyde Gas
A simple device for the conversion of a standard steam autoclave into a formalde-hyde gas sterilization chamber is described.
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20. Testing a steam-formaldehyde sterilizer for gas penetration efficiency
A test piece is described for monitoring the performance of low-temperature steam-with-formaldehyde sterilizers. Comparative tests have shown it to be more difficult to penetrate than an arterial catheter when exposed to the same sterilizing conditions. It is permanent and simple to use and maintain. The growth or non-growth of bacterial spores, in the conve
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21. Stability of antibiotics bound to polytetrafluoroethylene with cationic surfactants.
This study evaluated the effect of prolonged storage and sterilization on the noncovalent bonding of penicillin to polytetrafluoroethylene grafts. The surfactant tridodecylmethylammonium chloride was unaffected by prolonged storage or sterilization, and its ability to bind penicillin remained constant for as long as 3 months. Steam or ethylene oxide steriliz
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22. Detection of endotoxin on sterile catheters used for cardiac catheterization.
Pyrogen reactions during cardiac catheterization are an alarming complication that frightens patients and baffles many physicans. This report describes a simple, reproducible, precise technique for the measurement of endotoxin-like activity on the inner and outer surfaces of catheters intended for intravascular insertion. This technique is useful in document
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23. Influence of Packaging and Processing Conditions on the Decontamination of Laboratory Biomedical Waste by Steam Sterilization
The conditions for optimal steam decontamination of polypropylene bags half loaded with laboratory biomedical waste were studied (276 bags were processed). Controls were single-closed bags without water added or incisions made in the top, standing freely in an autoclave set at 121°C. The average time required to reach 121°C at the load center was 46 min fo
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24. Effect of Steam Sterilization and Gamma Irradiation of Peat on Quality of Rhizobium Inoculants
Data obtained by independent tests on each of 483 batches of Rhizobium inoculants for Glycine max, Medicago sativa, and Arachis hypogaea, manufactured commercially in South Africa, are reported and discussed. Whereas the average cell count per gram per batch was well in excess of 109, inoculants for G. max and M. sativa manufactured with peat treated with ga