You work as a relief pharmacist at a large pharmacy multiple. One of your jobs is to conduct a controlled drug (CD) balance check, including of the methadone solution.
You decide to measure the methadone solution balance before the shop opens, because there are less distractions, which will help ensure the balance is recorded accurately.
You measure the methadone as normal, pouring the solution from a part-opened bottle into a conical measure, and then make a note of the volume. As you are about to pour the methadone back into its container, you accidentally knock the conical measure, causing some of the methadone solution to spill onto the bench. As you had only just made a note of the volume in the conical flask, you are