Primary Science Jumbo Test Tubes with Stand

Chunky, durable test tubes put serious science safely within reach for young students! Encourages inquiry-based investigation and hands-on observation Supports serious science experiments — plastic tubes are safe at temperatures from 10°-200°F and feature calibration marks (25, 50, 75 and 100 ml) Includes 6 test tubes, different colored lids (to track experiments), sturdy rack and Activity Guide Hand wash Tubes measure 6"H x 1.5" in diameter