The phrase "to test the product" means to try out or evaluate the product to see if it works correctly, if it meets the requirements, or if it is of good quality. Full definition
Provided competitive evaluation of tested products for regular publication to be used as marketing information. (members.climber.com)
One very important question asked is about animal testing and you will be happy to know natural Life does not test their products on animals! (second-opinion-doc.com)
After an initial evaluation by scientists, people with arthritis test each product in real - life situations. (health.com)