A dataset of measured concentrations of nutrients CRM/RM by the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) and Marine Works Japan (MWJ) from January 2003 to August 2021

This dataset consists of 164 records for each parameter of nitrate, phosphate and silicate for 52 lots of CRM/RM since 2003. Before 2010 when KANSO only assigned RM, JAMSTEC aimed to work as an anchor lab for the nutrient concentration of RM independently from KANSO. And it was also important to monitor stability of nutrients concentration of CRM outside KANSO TECHNOS. Therefore JAMSTEC keeps to measure CRM.