YSI Pro Series DO Sensors Sensor:2002 Galvanic DO Sensor Flexible and lightweight

Flexible and lightweight

so readings hold up in conditions that shut other instruments down

it can be easily disassembled in the field

Easily replaced 9 volt battery

YSI Pro Series DO Sensors Sensor:2002 Galvanic DO Sensor Flexible and lightweightUser replaceable dissolved oxygen sensors for the YSI Pro Series and ProQuatro handhelds. 2002 Galvanic DO Sensor no warm up required, start sampling immediately 2003 Polarographic DO Sensor longer sensor life, lower overall cost of ownership (requires brief warm up) 2003B Polarographic DO Sensor with 2. 0 mil PE Blue membrane kit Compatible with: ProQuatro, Pro20, Pro20i, Pro1020, Pro2030 instruments.