Epoxy-coated, steel wire test tube rack resists most solvents, weak acids and bases, Withstands temperatures up to 121 degreeC, Holds 20 Tubes, size 20mm.
Butterfly Lifecycle Stages, Children can see how butterflies change as they grow with the Painted Lady Butterfly Life Cycle Stages. The accurately detailed Egg, Caterpillar, Chrysalis and Adult Butterfly replicas are oversized for little hands