The Ohaus ST400M-B Starter 400M Portable pH and Conductivity Meter (Probe Not Included) is a robust, lightweight, battery-operated multi-parameter meter with waterproof housing, which is ideal for testing pH, conductivity, TDS, salinity and resistivity in wet environments. A rechargeable lithium battery ensures hours of trouble-free testing in the field. The intuitive software and easy-to-view LCD allows for simple operation, while the built-in USB port ensures easy data transfer.

IP67 Housing

The Starter ST400M portable meter is constructed of an IP67 waterproof housing, ensuring it will operate even when fully immersed in water. A rubber cover protects the meter in harsh field environments or if accidentally dropped. Single-handed control of the meter is possible, providing the user the ability to perform field tests, while simultaneously operating the meter.

Long Battery Life

The ST400M has a rechargeable lithium battery that provides more than 40 hours of continuous use (without backlight), and over 300 charge cycles—making it ideal for use on long expeditions to the most remote test sites. It comes with a USB charging cable, allowing the meter to be charged in a car or any USB outlet, similar to a mobile phone.

Easy to Operate

The large backlit LCD with intuitive software displays useful information such as the electrode condition, calibration information, as well as all GLP required information including date, time, and user ID. The optimized menu is easy to navigate and makes setting up the portable meter quick and easy.