YSI Pro Series 20 DO Sensors

This product offers dissolved oxygen measurement using either polarographic or galvanic sensors, suitable for long-term monitoring or quick field checks. It measures temperature and barometric pressure.

• The description claims longer life saves time, money, and reduces overall costs.
• The description claims a warm-up/stabilization period is required for polarographic sensors.
• The description claims quick start without warm-up for galvanic sensors.
• The description claims a range of -5 to 55 °C for temperature measurement.