A "sample jar" refers to a small container used to hold a small portion of something, such as a liquid or a substance, that is being collected or tested for analysis or research purposes. Full definition
Thank you again to Naturally More for the awesome sample jars. (chefambershea.com)
STORE USE SAMPLE JAR FOR DOGS THAT ENJOY A GOOD VISIT Little Duckies treats are the perfect sample for handing out to those special visitors that like to bring their owners in store with them. (emeraldpet.com)