• Oversized Primary Science Jumbo Test Tubes are ideal for little hands to grip! • Featuring calibration marks of 25, 50, 75 and 100ml to encourage experimenting with volume! • Made of sturdy plastic, the tubes are safe to be used with liquids from -12° to 93°C. • Brightly coloured screw-on lids are wipe clean to enable labelling for different activities! • Test tubes measure 15cm high and come in a useful stand! These oversized and colourful Primary Science Jumbo Test Tubes from Learning Resources are ideal for little hands to grip while supporting hands-on observation and investigations. The jumbo test tubes feature calibration marks of 25, 50, 75 and 100ml to encourage experimenting with volume. Made of sturdy plastic, the tubes are safe to be used with liquids from -12° to 93°C. The brightly coloured screw-on lids are wipe clean to enable labelling for different activities. Set comes complete with a useful plastic stand for storage. Test tubes measure 15cm in height. Additional details: Packaging size: 155mm x 145mm x 145mm Recommended age: 3+