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ECTestr™ 11 PlusE Three ranges for maximum resolution Automatically or manually select measuring range Waterproof, dustproof and, it floats! Push-button calibration, HOLD function, and error messages Use these testers for either cup-style or dip-style measurements. For cup style, pour a small amount of  your sample directly into the sensor cup until it overflows; for dip style, simply immerse tester tip into  sample. Replaceable sensor lets you reuse meter body many times over. Valox® housing and stainless  steel electrodes for good chemical compatibility. Note: Before measuring, calibrate tester as either cup  style or dip style (depending on intended method of use).
Specifications:  TDSRange: 0 to 200.0, 0 to 2000 μS; 0 to 20.00 mS  TDSResolution:  0.1, 1 μS; 0.01 mS  Accuracy:   ±1% full scale (of range) Calibration: Push-button, one point per range Temperature: 32 to 122°F (0 to 50°C) Waterproof/Dustproof: IP67  Operating Temperature: 32 to 122°F (0 to 50°C) Power: Four 1.5V batteries (included) Battery life: >150 hours Dimensions: 6-1⁄2"L x 1-1⁄2" diameter Shipping weight: 0.45 lbs  Model number: 35662-35  
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