Dr. Michels states that in view of the low sensitivity of the residual protein detection methods used, and the heavy protein load identified, one must also ponder whether false positive test results occurred. For example, the destructive test results obtained on using the BCA method are alarmingly poor.

Intuitive Surgical recommends a complex process for cleaning da Vinci robotic instruments. The aim of this study is to validate the cleaning process used in our establishment by demonstrating the absence of residual protein.

In sterilization departments, manual washing of medical devices is not regulated by any standard.
The control of the preparation of the instruments detergent bath is essentially linked to the quality of the water and detergent distribution system.
Measurement of the conductivity can be used as a control tool of the detergent bath.

Instruments baskets made from sheet metal (compared to wires) protect instruments better but drying and cleaning performance are frequently controversially discussed. This study compares drying of loads of 50 standard instruments in wire and sheet metals baskets under different drying temperatures and times, with and without rinse aid (different formulas and dosages). The weight difference is measured before and after cleaning in repeated cycles.