Description:
1. Fit for 1.8ml/2ml micro-centrifuge tubes, 9x9 array, 81 Well.
2. Made of waterproof cardboard, lightweight, easy to carry and safe to use.
3. Keeps your sample tubes firmly inside while the box is closed.
4. Alphabet and number index(inside and outside) for easily tracking the samples.
5. Widely use on holding laboratory tubes or centrifuge tubes.