Pen Type TDS Meter
1,000 - 1,100 Per Piece
Dissolved Oxygen Meter
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Range : O2 : 0.0 to 50.0 mg/L; % Saturation O2 : 0 to 600 %; Temperature : -5.0 to 50.0°C Resolution : O2 : 0.1 mg/L or 1%; Temperature: 0.1°C Accuracy (@20°C/68°F) : O2: ±1% of reading; Temperature: ±0.2°C Calibration : Manual, in saturated air Probe, fixed (included) : HI 76409/4 with 4 m (13\') cable (included) Battery Type/Life : (1) 9V Ni-Mh, rechargeable/approx
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water quality
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water quality