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The bottle is made from pharmaceutical-grade glass, which minimises any interactions with the seawater and thereby increases the shelf-life of the product.
The bottle’s narrow-neck is sealed with a halobutyl, polymer-coated bung, providing a totally impervious barrier to evaporation. A secure, tamper-evident seal is made with a colour-coded alloy crimp-cap.
View our Seawater Standards Brochure for further details on all the standards available from OSIL.
Low Nutrient Seawater