Seawater and Estuary samples

All of Astoria-Pacific’s analyzers inherited their designs and methods from a system that was originally developed by an experienced oceanographer. Fast throughput, a robust frame and low reagent consumption are only some highlights these systems offer to current and future seawater and estuary water laboratories. Most importantly, for low-level detection, the Astoria and Astoria2 systems use micro-Segmented Flow Analysis, thereby ensuring accurate and repeatable analyses for several years.

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Recently, we have developed methods to reduce the effects of salinity via Fluorometry for Ammonia (see 307 Fluorometer above), and we were the first to create a Liquid Waveguide Capillary Cell (LWCC) kit for our systems. Therefore, Astoria-Pacific’s 50mm LWCC increases sensitivity by 5 – 10X, and can achieve such results in a much smaller and compact package.


OrthoPhosphate - 0.05-2ppb

For more info on the 50mm LWCC: API-50mmLWCC

Purchase the most compact, reliable and sensitive analyzer developed for Oceanography.

Demand the best. Demand an Astoria-Pacific Analyzer. We guarantee that you will achieve the lowest possible detection requirements than on any other colorimetric platform.

See table below for ranges achieved via a standard 6mm x 1.5mm or 10mm x 1.5mm flowcell. Expect much lower detection capabilities with the 50mm LWCC.

Test Overall Range Method(s) of Detection
Ammonia 0.05 – 50 uM (as N) Photometric, Fluorometric
Nitrate+Nitrite 0.05 – 7.5 µM (as N) Photometric
Nitrate 0.02 – 5.0 µM (as N) Photometric
Orthophosphate 0.02 – 3.0 µM (as P) Photometric
Silica 0.05 – 5.0 µM (as Si) Photometric
Urea 0.05 – 5.0 µM (as Urea) Photometric