DescriptionThese versatile plastic centrifuge tubes can be used in laboratory analysis. So you cannot miss this set! Smooth side walls, good transparency, good sealing, the sample is not volatile, practical scale of measurement experimental, fit for most laboratory tests.Features-Color: Orange.-Material: PP. -Size: About 10.50X3.50X3.50cm/ 4.13X1.38X1.38in. - High-quality plastic material, ultra-high transparency, easy to observe. -Centrifuge tubes are great for laboratory tests. Excellent for samples, food coloring, craft use, etc. -With scale design, the tubes can be used to do the precise measurement experiment and so on. -Let your learn about polymers and explore the basics of chemistry and physics with hands on activities. -Make learning fun, children learn and retain knowledge more science behind all the phenomena your children will observe.