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Product Description: Technical Parameters 1. Measuring Range: 0.00~19.99mg/L, 0.0~255.0% 2. Resolution: 0.01mg/L, 0.1% 3. Accuracy: ±1.5%F.S 4. Temperature Compensation: 0~45℃ 5. Power Supply: 9V Battery 6. Dimensions: 123mm×72mm×33mm