Related Experiment Video
Updated: Aug 2, 2026
Aseptic Laboratory Techniques: Volume Transfers with Serological Pipettes and Micropipettors
Published on: May 31, 2012
THE CLEANING OF INSTRUMENTS AND SYRINGES
Abstract:
The dangers to the handler of syringes used for routine injections were found to be negligible, but known infected syringes and those contaminated with antibiotics should be autoclaved before handling as a high proportion of these carry pathogenic organisms. Mechanical methods of cleaning syringes and instruments are assessed. The use of an artificial soil for testing purposes is described. Using this soil, ultrasonics by themselves are inadequate for cleaning syringes and instruments. Agitation with ultrasonics is essential for syringes, but is insufficient for instruments. Detergents are therefore an essential adjunct to the cleaning process. For syringes Pyroneg proved to be the most satisfactory, particularly if they had been previously siliconized. The best detergent for instruments contaminated with these types of soil was Penesolve 814 at a temperature of 95 degrees C. but the instruments must be adequately rinsed after this treatment. A number of other detergents and cleaning agents are discussed.
Insights
Routine syringe handling poses minimal risk. However, infected or antibiotic-contaminated syringes require autoclaving due to pathogenic organisms. Mechanical cleaning methods, including ultrasonics and detergents, are crucial for effective syringe and instrument decontamination.
Area of Science:
- Healthcare-associated infection control
- Sterilization and disinfection techniques
- Medical device reprocessing
Background:
- Syringes and medical instruments pose infection risks if not properly cleaned.
- Previous cleaning methods may be insufficient for certain contaminants.
- Understanding optimal reprocessing is vital for patient and handler safety.
Purpose of the Study:
- To evaluate the safety of routine syringe handling.
- To assess the efficacy of mechanical cleaning methods for syringes and instruments.
- To identify optimal detergents and procedures for decontamination.
Main Methods:
- Development of an artificial soil for standardized contamination testing.
- Evaluation of ultrasonic cleaning, with and without agitation.
- Assessment of various detergents (Pyroneg, Penesolve 814) and rinsing protocols.
Main Results:
- Routine syringe handling risks are negligible.
- Ultrasonics alone are insufficient; agitation is essential for syringes but not instruments.
- Pyroneg is effective for syringes, especially siliconized ones. Penesolve 814 at 95°C is best for instruments, requiring thorough rinsing.
Conclusions:
- Infected or antibiotic-contaminated syringes necessitate autoclaving.
- Detergents are essential adjuncts to ultrasonic cleaning for both syringes and instruments.
- Specific detergents and conditions optimize decontamination, ensuring safer medical practices.
Related Concept Videos
01:28Asepsis
01:23Hand hygiene
Hand washing...
01:18Handwashing I: Introduction and Types of Equipment
Hand wash basins in clinical areas should have faucets that can be turned on and off without using the hands; that is, they should be non-touch or lever-operated.
01:30Cleaning, Sterilization, and Disinfection
Cleaning
The cleaning process usually involves using water with detergents or enzymatic cleaner and removing foreign material from objects and surfaces, including organic material such as body fluids or inorganic material like soil. Cleaning is performed before high-level disinfection and sterilization because foreign materials on the cover of the devices interfere with process...
01:30Methods of Sterilization II: Chemical Methods
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
01:26Standard Precaution
Hand hygiene is the most crucial means to prevent the transmission of disease. Employers are legally required to provide their workers with personal protective equipment (PPE) to minimize exposure or contact with...