Product Title: Hach Orbisphere 3100 Portable Dissolved Oxygen (DO) Analyzer with piercing tool.

This setup was used until brewery closure. Take the guesswork out of your packaging and cellar operations with the Hach Orbisphere 3100, the most rugged and precise portable DO meter in the brewing industry. Designed specifically for the harsh environments of a production floor, this unit uses Luminescent Dissolved Oxygen (LDO) technology to provide oxygen readings in seconds—without the frequent recalibration or membrane replacements required by electrochemical sensors.