Discover colourful ways to test acids and bases using indicators

4kg approx

The striking bright blue forehead

Discover the fascinating process of crystal formation while building your unique collection

Closely related frogs are shown in identical poses so that comparisons can be made readily

Plankton Convolvulus Hawk Moth Discover colourful ways to testHealthy waterways and oceans are essential for our increasingly urbanised world. Yet monitoring water quality in aquatic environments is a challenge, as it varies from hour to hour due to storm water and currents. Being at the base of the aquatic food web and present in huge numbers, plankton are strongly influenced by changes in environment and provide an indication of water quality integrated over days and weeks. Plankton are the aquatic version of