YSI 6820 V2 Multi-Parameter Water Quality Sondes

Take advantage of YSI's new optical sensor design with Fondriest's factory-authorized V2 sonde upgrades.

The YSI 6820V2-01 Water Quality Sonde is designed for use with the 6150 ROX Optical DO probe.

The YSI 6820V2-02 Water Quality Sonde is designed for use with the 6150 ROX Optical DO probe and features a built-in shallow depth sensor.

The YSI 6820V2-03 Water Quality Sonde is designed for use with the 6150 ROX Optical DO probe and features a built-in medium depth sensor.

The YSI 6820V2-04 Water Quality Sonde is designed for use with the 6150 ROX Optical DO probe and features a built-in shallow vented level sensor.

The 6820-01 sonde is designed for use with the 6562 Rapid Pulse polarographic DO probe and features a built-in shallow depth sensor.

The 6820-02 sonde is designed for use with the 6562 Rapid Pulse polarographic DO probe and features a built-in medium depth sensor.

The 6820-03 sonde is designed for use with the 6562 Rapid Pulse polarographic DO probe.

The 6820-11 sonde is designed for use with the 6562 Rapid Pulse polarographic DO probe and features a built-in shallow vented level sensor.