An easy and healthy way to test a dog or cat for intestinal parasites. Stool eggs can be provided to the client, who uses the blue insert to take a stool sample. The insert is locked inside the container and taken to the veterinarian. The veterinarian simply fills the container with flotation medium (Fasol KR291015) up to the arrow tip, then rotates the blue insert several times. Finally, a glass slide is placed on the surface of the liquid for 10-15 minutes and then transferred to the slide for microscopic examination.