Create your own science investigations! The Jumbo Test Tubes with Stand by Learning Resources is a fun science toy perfect for all curious kids. The kids lab activity toy features 6 chunky, durable test tubes with different color caps and an activity book to help spark creative science thinking. Each tube is made from safe plastic that can withstand temperatures from 10-200 degrees Fahrenheit. The tubes also have calibration marks and hold up to 100ml of liquid. Educational Toys Planet offers the Jumbo Test Tubes with Stand as a great toy for classrooms or home research. What will you collect and analyze? The toy test tubes are 6 inches tall and 1.5 inches in diameter.