Safe Handling of Cannulas and Needles in Chemistry Laboratories

Cannulas and needles (sharps) are frequently used for chemical manipulations involving air- and moisture-sensitive chemicals. When using these devices, the presence of sharp tips poses a risk of puncture wounds and increases the likelihood of chemical exposure. While these devices are regularly used in chemistry, facts on their proper usage, as well as the prevention of injuries, are scarce in the literature. Needle injuries often reflect inadequate hands-on training in their use during chemical transfer procedures, incorrect recapping, and improper storage and disposal procedures. Preventing needle injuries in the lab requires having situational awareness which is achieved by using proper techniques and a proper reaction set up, performing a risk assessment, and having group discussions about the procedure. As in all chemical manipulations, it is critical to be familiar with the reaction setup, to receive the necessary training for the chemicals being used, and to have reviewed all associated standard operating procedures (SOPs). Thorough planning can reduce injuries and exposures incurred by students and other researchers. This paper will discuss safe techniques for the use of needles and cannulas in chemistry laboratories.