Blog Home » Q&A: Unusual Test Bath Data – a Cautionary Tale

Blog Home » Q&A: Unusual Test Bath Data – a Cautionary Tale

Q&A: Unusual Test Bath Data – a Cautionary Tale

Oxygen PH Chart

September 2019 Newsletter

These data show a small but rather catastrophic deployment error. Shown above, pH and dissolved oxygen data before the highlighted area did not match bottle samples or nearby validation sensors, but data after the highlighted area accurately matched the expected values.

Can you identify the error, and the corrective action taken in the highlighted area? Here’s a hint – instruments shipped with anti-foulant have precautions to contain the chemicals during transit.

Find the Answer

Sticker on the flow path of an oceanographic sensor to prevent anti-foulant chemicals from escaping

 

A Simple Mistake: Failed to Remove a Sticker

Most CTDs are shipped with some form of protection to keep debris from entering the conductivity cell. This is doubly important for instruments shipped with TBTO anti-foulant, which must be contained within the CTD’s flow path for safety reasons. In this case, a Deep SeapHOX V2 deployed in a test bath failed to match data from bottle samples and nearby sensors. Closer inspection revealed the cause – the shipping sticker was still in place, covering the intake of the CTD’s pump. Removing the sticker (shown in the highlighted region of the figure) allowed water to flow properly though the CTD, dissolved oxygen sensor, and pH sensor.

This might seem obvious, but the laundry list of deployment steps for even the most minimal oceanographic mooring can be daunting. It’s easy to overlook small details.

September 1, 2019

Related Posts

Featured Posts

World Oceans Week at Sea-Bird Scientific: The HyperNAV Program

A New Paradigm for Ocean Color Satellite Calibration The HyperNAV program is part of the NASA PACE (Plankton, Aerosol, Cloud, Ocean Ecosystem) Mission, set to launch in 2024. The NASA PACE Mission is an initiative aimed at helping scientists understand how carbon...

World Oceans Week at Sea-Bird Scientific: The Argo Program

At Sea-Bird Scientific, our ultimate goal is to help scientists and researchers better understand our oceans so they can help policy makers make informed decisions about ocean conservation policy, ocean resource utilization, and more, through accurate and quality...

Pride Month 2022

Celebrating and honoring our LGBTQIA+ communities At Sea-Bird Scientific, we are proud to stand with members of the LGBTQIA+ community during Pride Month 2022. This year, you may have noticed we changed our logo on social media to feature a rainbow throughout the...

Secured By miniOrange