DO meters based on fluorescence quenching (optical method)

Question

Can anyone inform me about Dissolved Oxygen (DO) meters based on fluorescence quenching (optical method), reliability and accuracy?
Much appreciated.

Ron Maltman · Answer

I have used these types of meters in the Oil Sands SAGD space on waters that would fouled typical polarographic/membrane based probes very quickly.
The technology is well developed and reliable. We typically use these types of instruments to measure low ppb (

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