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OSIL collect their lowest nutrient seawater ever
Created on
01 December 2007 by host
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OSIL(Ocean Scientific International Ltd.) have recently managed to produce their Low Nutrient Seawater with the lowest nutrient concentration to date. Each batch of raw seawater collected is monitored extensively by OSIL during preparation of their seawater products, and it is this monitoring that has allowed them to identify the seasonal and spatial variations in the seawater that leads to the lower nutrient levels.
OSIL are now confident of the areas and times for collection which will give them nutrient levels well within the quoted LNS specification, currently less than 1 micromolar in nitrate, nitrite, silicate and phosphate. By using these new-found collection criteria, OSIL can now achieve the maximum levels of 0.1 micromolar nitrate, nitrate and phosphate, and 0.5 micromolar silicate in their Low Nutrient Seawater which was not previously possible. Nigel Higgs, OSIL’s Seawater Chemist, explains, “these new lower nutrient concentration will be very helpful to our customers, particularly those measuring at low levels. We hope to maintain our current specifications for all future batches of LNS to reflect this enhancement of quality.”
OSIL have been supplying Nutrient Standard Solutions (NSS) and Low Nutrient Seawater (LNS) since 1992 along with their IAPSO Standard Seawater since 1989. This service has allowed analysts worldwide to prepare accurate calibration solutions in a real seawater matrix, thus avoiding the salt effects encountered in the widely used colorimetric methods of nutrient analysis.
For further information please visit: www.osil.co.uk
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