GLOSSARY: Polyacrylate gels

A material used to passively control temperature in the transit of medicines.

Advantages: The cheapest option of gels, custom sizes available, a range of dimensions in supply, the material has high latent heat capacity and specific heat capacity. Lower in weight in comparison to PCM and so will contribute less to transport costs.

Limitations: Can’t adapt as active systems or PCMs can in the face of unexpected temperature changes.