IAPSO Standard Seawater is prepared from natural seawater and is available in a range of salinities for use in measurements according to the Practical Salinity Scale 1978.
OSIL also provide nutrient standard such as Low Nutrient Seawater and Nutrient Standard Solutions.
Other calibration standards available include Iodate Standards and Performance Evaluation Samples for nutrient and salinity analysis.
View our Seawater Standards Brochure for further details on all the standards available from OSIL.
Performance Evaluation Samples
Marine Nutrient Standards Kit
Low Nutrient Seawater