YSI 605352 Field Probe and Cable Assembly for DO200A Dissolved Oxygen and Temperature Meter, 4-Meter Length

Product failed in three months. It comes with a one year warranty. However, this unit sat in an Amazon warehouse for a year. So, the manufacturer will not replace it under warranty. Amazon will not replace it under warranty. I am out $330.

I'm a water scientist and you do NOT want to buy this probe. I used these awful probes for years and had nothing but issues and bad data. YSI has since been acquired by a company called Xylem, and these probes have long been phased out for good reason. This probe uses a membrane and a potassium chloride solution, which nobody uses anymore; optical DO probes are the standard now. These membrane probes drift significantly and are very unstable. I definitely recommend an optical probe. Hope this info helps you.