Ohaus Starter 400M Portable Multi-Parameter MetersDurable Waterproof Battery Operated pH and Conductivity Meters Ideal for Field Testing Starter 400M Multi Parameter Portable Water Analysis Meters are robust, lightweight, battery operated units with waterproof housing, which are 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. Intuitive software and an easy to view LCD allows for
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