OHAUS ST20T-B TDS Pen Meter | IP67 Waterproof | Portable | Auto Calibration

Advanced waterproof TDS pen meter with high precision and auto calibration.

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The OHAUS ST20T-B TDS Pen Meter is built for professional water testing. It offers precise TDS measurement, auto calibration, waterproof IP67 protection, and fast response. Ideal for quality control, education, and environmental monitoring.

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