Extech RE300 ExStik ORP Meter - Waterproof Oxidation Reduction Potential Tester with Flat Surface Electrode, 1mV Resolution, Memory, and Analog Bargraph for Pool, Spa & Water Quality Analysis

Extech RE300 ExStik ORP Meter - Waterproof Oxidation Reduction Potential Tester with Flat Surface Electrode, 1mV Resolution, Memory, and Analog Bargraph for Pool, Spa & Water Quality Analysis

• FLAT SURFACE ELECTRODE: Say goodbye to easily broken glass bulbs. The rugged flat surface sensor allows for quick, on-the-spot ORP and Redox measurements in liquids, semi-solids, and even solids, ensuring reliable contact and superior accuracy.
• HIGH-RESOLUTION ACCURACY: Stop guessing with your water quality. This highly precise digital meter measures from -999 to 999mV with a sharp 1mV resolution and an impressive ±4mV accuracy, giving you laboratory-grade results right in the field.
• FULLY WATERPROOF DESIGN: Never panic about dropping your tool in the pool or tank. Boasting a rugged IP57 waterproof rating, this resilient meter actually floats in water, protecting your investment from accidental submersion and wet environments.
• SMART MEMORY AND DISPLAY: Keep track of your data effortlessly. The built-in memory stores and recalls up to 15 tagged readings, while the high-contrast LCD features a simulated analog bargraph to help you visualize ORP changes in real-time.
• INTERCHANGEABLE SENSOR MODULES: Future-proof your testing toolkit. The smart built-in chip automatically recognizes different probes, allowing you to easily swap the ORP module for pH or chlorine sensors (sold separately) as your needs grow.