Why don't LDO® probes require sample stirring when other DO probes do?

Document ID

Document ID TE426

Version

Version 4.0

Status

Status Published

Published Date

Published Date 07/12/2018
Question
Why don't LDO® probes require sample stirring when other DO probes do?
Summary
The LDO® probe does not require stirring for measurement of dissolved oxygen
Answer
Other dissolved oxygen probes consume oxygen during measurement, which depletes the oxygen at the electrode surface. The sample must be stirred to replenish this oxygen, or else the probe will detect lower and lower concentrations and give inaccurate results. In contrast, the LDO®probe does not consume oxygen. An equilibrium between oxygen in the sample and oxygen at the sensor surface is easily maintained without stirring.

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