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KL***9(II) High Accuracy Pen-type pH Meter Technical Specification: Measuring range:0.*0~*4.*0PH Accuracy:+/*0.1PH Resolution:0.*1PH Operating Temperature:0.C~*0.C Automatic Temperature Compensation:0.C~*0.C Plug:Fixed Electrode BNC Power Supply:4×1.5V(AG*3) Dimensions:**0×*6×*3(mm3) Weight:*5g **5g KL***9(&#***6;)High Accuracy Pen-type pH Meter Technical Specification: Measuring range:0.*0~*4.*0PH 0.C~*5.C Accuracy:±0.1PH ±1.C Resolution:0.*1PH 0.1.C Operating Temperature:0.C~*0.C Automatic Temperature Compensation:0.C~*0.C Power Supply:4×1.5V(AG*3) Dimensions:**0×*6×*3(mm3) Weight:*1g KL***9(I) Pocket-size PH meter Technical Specification: Measuring range:0.0~*4.0pH Accuracy:±0.2PH ±0.1PH(at *0.C) ±0.1PH ±0.2PH ±0.1PH(at *0.C) Resolution:0.1PH Operating Temperature:0.C&#****4;*0.C Temperature Compensation:0.C&#****4;*0.C Plug:Fixed Electrode BNC Power Supply:3×1.5V(AG*3) 4×1.5V(AG*3) 4×1.5V(AG*3) Dimensions:**0×*9×*0(mm3) Weight:*1g *0g KL**3(I) High Accuracy Pen-type pH Meter Technical Specification: Range:0.****4.*0PH Resolution:0.*1PH Accuracy:±0.1PH Temperature Compensation:0.C~*0.C Power Supply:2×3V(CR***2 Battery) Operating Temperature:0.C~*0.C Adjustment:1 points Dimension:**0mm×*7mm×*0mm Weight:*6g