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Q&A: What is Causing This “Feature” in pH?

Q&A: What is Causing This “Feature” in pH?

The data above originate from a SeaFET pH sensor connected to a flow-through system that should provide stable, consistent data. As you can see, the Internal pH value experiences a dramatic drop in pH and a subsequent increase in noise midway through data collection....

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Reliably Measuring pH in the Ocean

Reliably Measuring pH in the Ocean

Although it’s barely the size of a breath mint, the Ag/AgCl reference allows the Deep SeapHOx V2 to dive deeper than any other pH sensor. Learn how a solid-state reference electrode allows the SeaFET V2, SeapHOx V2, and Deep SeapHOx V2 retain accuracy across a much...

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pH Sensor Flowchart

pH Sensor Flowchart

There are plenty of pH sensors on the market, with some recent additions showcasing novel technology and design. Among Sea-Bird Scientific’s holdings, we offer 7 different pH sensor models divided amongst 2 different technologies: ISFET and glass-electrode sensors. To...

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Video: Comparing the SeaFET V1 and SeaFET V2 Interface

Video: Comparing the SeaFET V1 and SeaFET V2 Interface

Back in May 2018, Sea-Bird Scientific upgraded the SeaFET™ pH sensor to the “SeaFET™ V2”, improving upon the performance of the original SeaFET™ while retaining the same underlying ISFET sensor technology. The SeaFET™ V2 improves upon the original SeaFET’s...

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Q&A: Two pH Sensors – what is causing this difference?

Q&A: Two pH Sensors – what is causing this difference?

January 2019 Newsletter The data shown above originate from two different pH sensors deployed in the same well-mixed test bath. Both sensors were cleaned, tested, and calibrated before deployment, and were given 24 hours to equilibrate before recording data. So why...

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Prototype pH Sensors: Eyes on an Experimental Kelp Farm

Prototype pH Sensors: Eyes on an Experimental Kelp Farm

December 2018 Newsletter Spanning January to July 2018, two alpha SeapHOx V2s (serial numbers 001 and 002) tracked changes in pH at an experimental kelp farm funded by the Paul Allen Foundation. The purpose of the experiment was twofold: field-test the upgraded...

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Basic Maintenance videos for the SeaFET V2

Basic Maintenance videos for the SeaFET V2

Upgrading to a SeaFET V2 from the original SeaFET is completely internal—aside from the most inaccessible hardware within the instrument, the V2 uses the same housing, sensors, and batteries as the V1. Therefore, the basic maintenance procedures for the V1 and V2 are...

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Q&A: Sudden Increase in Salinity

Q&A: Sudden Increase in Salinity

November 2018 Newsletter The figure above originated from an SBE 37-SMP MicroCAT moored CTD deployed in shallow seawater. On day 38, the salinity data appears to jump from a near-zero value, steadily increasing until around day 43, where it stayed around 30psu. Nearby...

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Featured Posts

February 2023 Newsletter

    Sea-Bird Scientific at Ocean Business 2023Sea-Bird Scientific is excited to announce our exhibition at the Ocean Business Conference in Southampton, United Kingdom from April 18 – 20, 2023. Don’t forget to stop by and see us at booth #L9.We are excited...

Announcing the NEW LED AC-S

We are more than ecstatic to announce the release of the NEW LED AC-S Spectral Absorption and Attenuation Sensor. It is the first of its kind, and a standalone transmissometer in the market. The AC-S provides in-situ optical data of beam transmission and absorption...

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