On what should sample jar labels be printed?

Sample jar labels should be printed on pre-gummed sheets of blank labels because these labels are specifically designed for durability and adherence. When taking environmental samples, it is crucial for the label to remain intact and legible throughout the duration of the sampling process, which may expose the samples to various conditions such as moisture or contaminants.

Pre-gummed labels typically have a strong adhesive that ensures they stick securely to the sample jars and can withstand handling, transport, and storage conditions. Additionally, these labels can be easily printed with clear and precise information about the sample, including the date, time, location, and type of sample, which is essential for correct identification and analysis later.

Using alternative options like plain paper may not provide the necessary durability, while writing with pencil does not guarantee that the information will remain legible. Adhesive tape is not suitable for creating sufficient labels as it may not provide the same level of clarity and professionalism in documentation as pre-gummed label sheets do.