Like instruments, the unused containers are contaminated with dust, fibers, and chemical films. These are removed by vigorous treatment with hot detergents. The containers are inverted on spindles in the front of the cleaning machine and are automatically conveyed in an inverted position. During rotation of the cleaning machine, they are carried through a series of rigorous, high pressure treatment including hot detergent, hot tap water and final rinses with distilled water. Because many containers have restricted openings, it is essential that the treatments in any washer be introduced though tubes into each container with smooth outflow. For ampoules or containers with a markedly constricted opening that makes water drainage incomplete, the final treatment is usually a blast of clean air to blow out remaining water.
After cleaning, it is essential that the clean containers be protected from dust and other particulates that might be present in the environment. Therefore, the clean containers are often removed from the rinser and placed in clean stainless steel boxes for sterilization under the protection of HEPA filtered airflow. Glassware and metal ware (small) may also be contaminated from previous use and can also be mechanically like containers in their converted position during automatically conveying through a series of rigorous, high pressure treatment including hot detergent, hot tap water and final rinses with distilled water. In cleaning new glassware, the detergent treatment is usually eliminated, and with it the risk of the detergent residue.
With rinsing alternatively by hot (preferably clean steam) and cold treatments should be used to lessen the debris. Final rinses should be done with filtered WFI.
No comments:
Post a Comment