water properties as close to nature are the key for every aquarium's success. However, monitoring relevant parameters in seawater is difficult due to numerous interfering ions. Therefore, test kits considering the specific characteristics of seawater are needed to analyze the water precisely. Highly precise analyses for seawater conditions. Furthermore, they offer a highly attractive price performance ration and make test kits in laboratory quality affordable for the standard hobby user. calibrated dropper made by a German manufacturer ensures uniform drops during all repeat tests reagents are made in Germany in accordance with EN ISO 9001 reagents are analyzed according to AAS and NIST standards, strict batch and quality control, easy to use with intuitive pictogram instructions.