目测清洁标准
Visual cleaning standard
干燥后的器械表面及其关节应光洁，无血液、污 渍、水垢等残留物质和锈斑，功能完好无损毁，与目测合格标准任何一项不符视为不合格。
After drying, the surface and joints of the instrument shall be bright and clean, free of blood, stains, scale and other residual substances and rust spots, and free of damage after the function is completed. Any nonconformity with any one of the visual inspection standards shall be deemed as disqualification.
白纱布法
White gauze method
在未干燥的情况下，用高压气枪将器械管腔内的水吹向清洁的白纱布上，纱布应洁净如初，不变颜色为合格，若纱布污染则不合格。
Under the condition of not drying, use a high-pressure air gun to blow the water in the instrument cavity to the clean white gauze. The gauze shall be clean as before, and the same color is qualified. If the gauze is polluted, it is unqualified.
隐血试验法
Occult blood test
将匹拉米洞试剂与过氧化氢和乙醇混合试剂以1 ：1比例进行混合组成隐血试剂。
The piperone reagent was mixed with hydrogen peroxide and ethanol in a ratio of 1:1 to form occult blood reagent.
操作者戴橡胶手套，取受检器械的表面、齿槽、轴节、管腔内壁等部位作为采样点，用无菌棉签饱蘸隐血试剂，在待检的器械表面反复擦拭，5min内观察棉签变色情况。
The operator shall wear rubber gloves, take the surface, alveolar, shaft and inner wall of the instrument to be tested as sampling points, dip the sterile cotton swab with occult blood reagent, wipe the surface of the instrument to be tested repeatedly, and observe the discoloration of the cotton swab within 5min.
结果判定：立即变色、＜lmin变色为阳性，<5min变色为弱阳性，以上均视为不合格；＞5min不变色为合格。
Results it was judged that the discoloration was positive immediately, < 1 min, < 5 min, weak positive, all of the above were regarded as unqualified; the discoloration was qualified if the discoloration was not more than 5 min.
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