YSI pHotoFlex pH Colorimeter free chlorine durable notebook is designed to

durable notebook is designed to withstand the harshest elements

Required guard extension kit for use with 1001A Amplified pH Sensor Kits on 2-port ProSeries or 556 cables (6051010-x or 6051020-x)

Accuracy of ±10 mV ORP

The Solinst Levelogger 5 Junior utilizes the same robust Hastelloy® pressure sensor as the Levelogger 5 to record absolute pressure

YSI pHotoFlex pH Colorimeter free chlorine durable notebook is designed toLED filter colorimeter with 6 wavelengths, 38 pre defined tests, 100 user defined tests, and 1,000 data set memory. Includes a BNC connector for direct pH probe measurement. Rugged, waterproof (IP 67) design for lab or field water testing. Reagents can be used on YSI colorimeters or other brands.