1.2 The complexity of the structure of the instrument There are joints, grooves, crevices, and some have a long, narrow lumen, artificial cleaning is difficult to scrub to the internal, thoroughly remove the pollutants more difficult.
1.3 Pollutants on the surface of the instrument dry out If the used instrument is not cleaned in time, the pollutants attached to the instrument gradually dry out after being stored for a period of time, and it is difficult to wash it thoroughly.
1.4 Inadequate cleaning techniques and unreasonable procedures Each part of the instrument is not sufficiently in contact with the cleaning agent for a sufficient period of time, and there is a lack of effective cleaning methods and improper disposal of the instrument after cleaning.
1.5 The influence of cleaning agents The lack of a correct choice of cleaning agents prevents targeted removal of contaminants, and the lack of a correct method of use makes it impossible to guarantee the quality of cleaning.
1.6 Cleaning staff is not fixed, the place is not standardized In the hospital area, in the flow room, in the stomatology clinic and other places, any staff can be contaminated instruments cleaning, these places lack of standardized places and equipment and personnel without cleaning operation training, cleaning quality is difficult to meet the standards.