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For the preparation of non-marine working standards, this kit contains concentrates of Nutrient Standard Solutions (50 ml each of phosphate, nitrite, nitrate, silicate, ammonia) and de-ionised water (2 x 1 Litre) for the preparation of fresh standards.
Each kit contains full instructions.
View our Seawater Standards Brochure for further details on all the standards available from OSIL.
Nutrient Standard Solutions
Freshwater Nutrient Standards Kit
Marine Nutrient Standards Kit
Low Nutrient Seawater